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Period in electrocardiography
In electrocardiography, the PR interval is the period, measured in milliseconds, that extends from the beginning of the P wave (the onset of atrial depolarization)
PR_interval
Examination of the heart's electrical activity
This analysis calculates features such as the PR interval, QT interval, corrected QT (QTc) interval, PR axis, QRS axis, rhythm and more. The results from
Electrocardiography
Abnormal heart rhythm due to faulty electrical connections in the heart
combination of palpitations and when an electrocardiogram (ECG) show a short PR interval and a delta wave. It is a type of pre-excitation syndrome. WPW syndrome
Wolff–Parkinson–White syndrome
Wolff–Parkinson–White_syndrome
Aspect of heart function
in the AV node forms much of the PR segment on the ECG, and part of atrial repolarization can be represented by the PR segment. The distal portion of the
Cardiac_conduction_system
Medical condition
block. It is diagnosed using an electrocardiogram, and is defined as a PR interval greater than 200 milliseconds. First degree AV block affects 0.65-1.1%
First-degree atrioventricular block
First-degree_atrioventricular_block
Heart rate below the normal range
node. This condition is diagnosed via ECG, with PR intervals in excess of 200 milliseconds. The PR interval represents the length of time between the start
Bradycardia
Topics referred to by the same term
Look up PR or .pr in Wiktionary, the free dictionary. PR, P.R., Pr, pr, or Pr. may refer to: P.R. (TV series), a Canadian television sitcom Partisan Review
PR
Concept in Bayesian statistics
In Bayesian statistics, a credible interval is an interval used to characterize a probability distribution. It is defined such that an unobserved parameter
Credible_interval
Medical condition
is defined by progressive prolongation of the PR interval, with a resulting dropped beat (the PR interval gets longer and longer until a beat is finally
Atrioventricular_block
Medical intervention
sequence. There are a few key intervals that must be measured for proper analysis of a heart rhythm, The PR interval is the interval between the end of the P
Rhythm_interpretation
Medical condition
the PR interval on consecutive beats followed by a blocked P wave (i.e., a dropped QRS complex). After the dropped QRS complex, the PR interval resets
Second-degree atrioventricular block
Second-degree_atrioventricular_block
Type of statistical probability
tolerance interval with endpoints ( L ( x ) , U ( x ) ] {\displaystyle (L(\mathbf {x} ),U(\mathbf {x} )]} which has the defining property: inf θ { Pr θ ( F
Tolerance_interval
Electrocardiogram waveform representing ventricular contraction in the heart
measure the QRS interval start at the end of the PR interval (or beginning of the Q wave) to the end of the S wave. Normally this interval is 0.08 to 0.10
QRS_complex
Heart condition
with LGL syndrome have episodes of abnormal heart racing with a short PR interval and normal QRS complexes seen on their electrocardiogram when in a normal
Lown–Ganong–Levine_syndrome
Congenital heart defect
waves first degree atrioventricular block manifesting as a prolonged PR-interval low amplitude QRS complexes in the right precordial leads atypical right
Ebstein's_anomaly
Shorthand used in statistics
The prediction interval for any standard score z corresponds numerically to (1 − (1 − Φμ,σ2(z)) · 2). For example, Φ(2) ≈ 0.9772, or Pr(X ≤ μ + 2σ) ≈ 0
68–95–99.7_rule
Elevation of the ST segment on an electrocardiogram
small squares) in a precordial lead. The baseline is either the PR interval or the TP interval. This measure has a false positive rate of 15–20% (which is
ST_elevation
Medical condition
complexes with a regular R-to-R interval represent the second rhythm. The PR interval will be variable, as the hallmark of complete heart block is the lack
Third-degree atrioventricular block
Third-degree_atrioventricular_block
High calcium (Ca2+) level in the blood serum
confirmed after a week. Specific changes, such as a shortened QT interval and prolonged PR interval, may be seen on an electrocardiogram (ECG). Treatment may
Hypercalcaemia
Teaching aid in cardiac physiology
systole Cardiac diastole ECG The EKG complex. P=P wave, PR=PR interval, QRS=QRS complex, QT=QT interval, ST=ST segment, T=T wave Wiggers with jugular venous
Wiggers_diagram
American Heart Association course
first degree: prolonged PR interval (> 0.20 seconds) second degree mobitz type I (wenckebach): progressive lengthening of PR interval then dropped beat (p
Pediatric advanced life support
Pediatric_advanced_life_support
Science of elucidating, diagnosing, and treating the electrical activities of the heart
refractory period Pacemaker potential Electrocardiography P wave PR interval QRS complex QT interval ST segment T wave U wave Hexaxial reference system Chamber
Cardiac_electrophysiology
Cardiac rhythm
ratio of 1:1. Normal P wave axis (0 to +75 degrees) Normal PR interval, QRS complex and QT interval. QRS complex positive in leads I, II, aVF and V3–V6, and
Sinus_rhythm
Excess potassium in the blood
in the following progression: peaked T wave, shortened QT interval, lengthened PR interval, increased QRS duration, and eventually absence of the P wave
Hyperkalemia
Russian-German physician (1889–1951)
beats show a constant, typically normal PR interval, and conduction to the ventricles occurs at regular intervals. This form is identical to the type of
Woldemar_Mobitz
Human heart defect present at birth
septal defects may have a prolonged PR interval (a first-degree heart block). The prolongation of the PR interval is probably due to the enlargement of
Atrial_septal_defect
Measurement made on an electrocardiogram
The QT interval is a measurement made on an electrocardiogram used to assess some of the electrical properties of the heart. It is calculated as the time
QT_interval
Uniform distribution on an interval
L].} The confidence interval given before is mathematically incorrect, as Pr ( [ θ ^ , θ ^ + ε ] ∋ θ ) ≥ 1 − α {\displaystyle \Pr {\big (}[{\hat {\theta
Continuous uniform distribution
Continuous_uniform_distribution
Heart conduction disease
slowing of electrical conduction within the heart, as shown by a prolonged PR interval. These patterns may be present all the time, but may appear only in response
Brugada_syndrome
Lower than typical heart rate
P waves: Upright, consistent, and normal in morphology and duration. PR interval: Between 0.12 and 0.20 seconds in duration. QRS complex: Less than 0
Sinus_bradycardia
Fast heart rhythm associated with exacerbations of COPD
irregular PR and RR intervals. Variation in PR intervals has not been included in the diagnostic criteria because the PR interval varies with the length
Multifocal_atrial_tachycardia
Estimate of an interval in which future observations will fall
inference, specifically predictive inference, a prediction interval is an estimate of an interval in which a future observation will fall, with a certain
Prediction_interval
Form of execution involving injection of chemicals into the bloodstream
This progresses into a broadening and lengthening of the P wave and PR interval, then eventually disappearance of the P wave, widening of the QRS complex
Lethal_injection
Post-streptococcal inflammatory disease
others) or C reactive protein (>3.0 mg/dL). ECG showing a prolonged PR interval after accounting for age variability (Cannot be included if carditis
Rheumatic_fever
Blood pressure in a vein of the neck
it is separated from the 'a' wave by 120ms which corresponds to the PR interval. It occurs simultaneously with S1. The 'x' descent follows the 'c' wave
Jugular_venous_pressure
Medical condition
in which bifascicular block is observed in a patient with a prolonged PR interval (first degree AV block). The treatment of trifascicular block is highly
Trifascicular_block
Electrocardiogram waveform representing atrial contraction
disease states such as cardiac ischaemia. Electrocardiography PR interval QRS complex QT interval ST segment T wave U wave Longmore, Murray (2004). Oxford
P_wave_(electrocardiography)
Insufficient potassium in the blood
superimposed upon T waves, therefore producing the appearance of prolonged QT intervals, when serum potassium levels fall below 3 mEq/L. The amount of potassium
Hypokalemia
atrial complex or P wave or preceded by an abnormal P wave with a shorter PR interval. Rarely, the abnormal P wave can follow the QRS. Premature atrial contraction
Premature junctional contraction
Premature_junctional_contraction
Condition in which the value of a measurement or observation is only partially known
The most general censoring case is interval censoring: P r ( a < x ⩽ b ) = F ( b ) − F ( a ) {\displaystyle Pr(a<x\leqslant b)=F(b)-F(a)} , where F
Censoring_(statistics)
Condition of low level of magnesium in the body
change may show a tachycardia with a prolonged QT interval. Other changes may include prolonged PR interval, ST segment depression, flipped T waves, and long
Magnesium_deficiency
Confusion Malaise Increased appetite* Changes in ECG parameters (e.g. QRS & PR interval) Ataxia Hallucinations Paraesthesias Nervousness Numbness Tinnitus Hepatitis
List of side effects of doxepin
List_of_side_effects_of_doxepin
Perceived cardiac abnormality in which one's heartbeat can be felt
on every patient complaining of palpitations. The presence of a short PR interval and a delta wave (Wolff-Parkinson-White syndrome) is an indication of
Palpitations
Plant-derived medication
people taking digoxin include increased PR interval (due to decreased AV conduction) and a shortened QT interval. Also, the T wave may be inverted and accompanied
Digoxin
Medical condition
that this is quite different from the Wenckebach AV block, in which the PR interval gets progressively longer, before the dropped QRS segment. The pause
Sinoatrial_block
Genus of plants
cardiac effects may include ECG abnormalities such as widening of the PR interval, supraventricular tachycardia, and ventricular fibrillation. Symptoms
Cicuta
Probability distribution
probability mass function: f ( k , n , p ) = Pr ( X = k ) = ( n k ) p k ( 1 − p ) n − k {\displaystyle f(k,n,p)=\Pr(X=k)={\binom {n}{k}}p^{k}(1-p)^{n-k}} for
Binomial_distribution
Medical condition
that junctional rhythms are regular rhythms. This means that the time interval between beats stays constant. The next normal finding is a normal QRS.
Junctional_rhythm
How many standard deviations apart from the mean an observed datum is
observation X will lie in the interval with high probability γ {\displaystyle \gamma } , i.e. Pr ( L < X < U ) = γ , {\displaystyle \Pr(L<X<U)=\gamma ,} For the
Standard_score
Type of congenital heart defect
complicate TOF. In particular, elongation of the QRS complex and a shortened PR interval. Genetic abnormalities found in TOF may lead to the earlier diagnosis
Tetralogy_of_Fallot
Heart disorder in which the cardiac ventricles activate too early
Type Conduction pathway PR interval QRS interval Delta wave Wolff–Parkinson–White syndrome Bundle of Kent (atria to ventricles) short long yes Lown–Ganong–Levine
Pre-excitation_syndrome
Medication
taking dronedarone will prevent the development of severe liver injury. PR interval exceeding 280 ms [citation needed] Use of cytochrome P-450 (CYP) 3a isoenzyme
Dronedarone
Bound on probability of a random variable being far from its mean
within the interval (i.e. its "coverage") is at least 1 / 2 {\displaystyle 1/2} . For the general case, for any a > 0 {\displaystyle a>0} , Pr ( | X − μ
Chebyshev's_inequality
Discrete probability distribution
expresses the probability of a given number of events occurring in a fixed interval of time if these events occur with a known constant mean rate and independently
Poisson_distribution
Theorem in mathematics
change of such a function over an interval is equal to the instantaneous rate of change at some point in the interval. For example, if a car smoothly travels
Mean_value_theorem
Doomsday scenario on human births
Pr ( n ) = ∫ N = n N = ∞ Pr ( n ∣ N ) Pr ( N ) d N = ∫ n ∞ k N ( α + 1 ) d N = k α n α {\displaystyle \Pr(n)=\int _{N=n}^{N=\infty }\Pr(n\mid N)\Pr(N)\
Doomsday_argument
Chemical compound
or T wave inversion may occur without indicating toxicity; however, PR interval prolongation indicate toxicity. There are no clearly established therapeutic
Cerberin
Chemical compound
excitation and a decreased upstroke velocity. Disopyramide prolongs the PR interval by lengthening both the QRS and P wave duration. This effect is particularly
Disopyramide
Probability of survival beyond any specified time
on the interval [ 0 , ∞ ) {\displaystyle [0,\infty )} , then the survival function or reliability function is: S ( t ) = ∫ t ∞ f ( u ) d u = Pr ( T > t
Survival_function
Probability distribution
function: Pr ( T > s + t ∣ T > s ) = Pr ( T > s + t ∩ T > s ) Pr ( T > s ) = Pr ( T > s + t ) Pr ( T > s ) = e − λ ( s + t ) e − λ s = e − λ t = Pr ( T >
Exponential_distribution
Drug that binds to but does not activate muscarinic cholinergic receptors
is lowered, which facilitates conduction. This is seen as a shortened PR-interval on an electrocardiogram. It[clarification needed] has an opposite effect
Muscarinic_antagonist
Measure of variation in statistics
confidence interval) and for practical reasons of measurement (measurement error). The mathematical effect can be described by the confidence interval or CI
Standard_deviation
Irregular heartbeat due to abnormal conduction from the atrioventricular nerve
down individual electrical impulses. This is manifest on the ECG as the PR interval, which is about less than 200 milliseconds, the time from activation
Junctional ectopic tachycardia
Junctional_ectopic_tachycardia
Kth smallest value in a statistical sample
the interval delimited by the 3rd and 4th order statistics. However, we know from the preceding discussion that the probability that this interval actually
Order_statistic
Plant chemical
intravenous isoprenaline or atropine. In moderate cases, prolonging of the PR interval and progression to AV dissociation, cardiac pacing is used. The effectiveness
Oleandrin
Protein-coding gene in the species Homo sapiens
on chromosome 3 to be associated with variation in QTc-interval, QRS duration and PR-interval. These results indicate that genetic variation at the SCN5A
SCN5A
Statistical considerations on how many observations to make
eventually obtained, i.e., if a high precision is required (narrow confidence interval) this translates to a low target variance of the estimator. the use of
Sample_size_determination
Antihypertensive drug of the calcium channel blocker class
take dolasetron (Anzemet), as both agents can cause a dose-dependent PR interval and QRS complex prolongation. Itraconazole (Onmel/Sporanox) exhibits
Isradipine
Branch of statistics
censored, and interval censored. These are denoted "unc.", "l.c.", "r.c.", and "i.c." in the equation below. L ( θ ) = ∏ T i ∈ u n c . Pr ( T = T i ∣ θ
Survival_analysis
Abnormal heart rhythm originating from an atrial location
Differs from normal sinus P wave May exhibit either long RP or short PR intervals Rhythm may be paroxysmal or sustained May demonstrate an increase in
Atrial_tachycardia
Medical condition
widening of the QRS complex, and temporal potentially prolongation of the PR interval. However, individuals may also be asymptomatic, presenting with no symptoms
Lev's_disease
Function in actuarial science
probability of dying in a short interval after x {\displaystyle x} , divided by the interval length: μ ( x ) = lim Δ x → 0 + Pr ( x < X ≤ x + Δ x ∣ X > x )
Force_of_mortality
Tools to represent statistical uncertainty
year, we can construct a separate 95% confidence interval for each age. Each of these confidence intervals covers the corresponding true value f(x) with
Confidence and prediction bands
Confidence_and_prediction_bands
Rule in statistics
binomial distribution. In the latter case, the edge of the confidence interval is given by Pr(X = 0) = 0.05 and hence (1 − p)n = 0.05 so n ln(1 – p) = ln .05
Rule_of_three_(statistics)
Middle quantile of a data set or probability distribution
the interval width w {\displaystyle w} to the median to get the upper bound of the median interval. Then we subtract that proportion of the interval width
Median
Medical condition
seen on ECG with wandering atrial pacemaker include differing PR intervals and PP intervals. Another heart rhythm similar to wandering atrial pacemaker
Wandering_atrial_pacemaker
Function of the observed sample results
That is: p = Pr ( T ≥ t ∣ H 0 ) {\displaystyle p=\Pr(T\geq t\mid H_{0})} for a one-sided right-tail test-statistic distribution. p = Pr ( T ≤ t ∣ H 0
P-value
Statistical model for a binary dependent variable
follows: Pr ( Y i = 1 ∣ X i ) = Pr ( Y i 1 ∗ > Y i 0 ∗ ∣ X i ) = Pr ( Y i 1 ∗ − Y i 0 ∗ > 0 ∣ X i ) = Pr ( β 1 ⋅ X i + ε 1 − ( β 0 ⋅ X i + ε 0 ) > 0 ) = Pr (
Logistic_regression
Statistics model
Pr ( Y = 1 | X = x ) = x ′ β . {\displaystyle \Pr(Y=1|X=x)=x'\beta .} For this model, E [ Y | X ] = 0 ⋅ Pr ( Y = 0 | X ) + 1 ⋅ Pr ( Y = 1 | X ) = Pr (
Linear_probability_model
Class of medications
fibrillation, most serious consequence), ECG changes (prolonged QRS, QT, and PR intervals) CNS effects: syncope, seizure, coma, myoclonus, hyperreflexia, convulsions
Tricyclic_antidepressant
Statistic of a given score
In statistics, the percentile rank (PR) of a given score is the percentage of scores in its frequency distribution that are less than that score. Its mathematical
Percentile_rank
Military maneuver of the US Air Force
A minimum interval takeoff (MITO) is a technique of the United States Air Force for scrambling all available bomber and tanker aircraft at twelve- and
Minimum_interval_takeoff
Description of continuous random distribution
is included within the interval (t, t + dt) is equal to f(t) dt, or: Pr ( t < X < t + d t ) = f ( t ) d t . {\displaystyle \Pr(t<X<t+dt)=f(t)\,dt.} It
Probability_density_function
Speed of the heartbeat, measured in beats per minute
methods exist:[citation needed] HR = 1000 · 60/(RR interval in milliseconds) HR = 60/(RR interval in seconds) HR = 300/number of "large" squares between
Heart_rate
Statistical measure of how far values spread from their average
( x ) {\displaystyle x^{2}f(x)} is Riemann-integrable on every finite interval [ a , b ] ⊂ R , {\displaystyle [a,b]\subset \mathbb {R} ,} then Var (
Variance
Type of random mathematical object
the interval ( a , b ] {\displaystyle \textstyle (a,b]} . The probability of n {\displaystyle \textstyle n} points existing in the above interval ( a
Poisson_point_process
Antiarrythmic agent
pathway that causes re-entry tachycardia. WPW is characterized by a short PR interval (<0.12 second) and a prolonged, slurred QRS complex (>0.12 seconds).
Lorcainide
Form of entropy encoding used in data compression
Arithmetic coding achieves compression by subdividing the interval [0, 1) into sub-intervals proportional to symbol probabilities. When symbol probabilities
Arithmetic_coding
Statistical hypothesis test
pair of measurements. In the simplest case, the measurements are on an interval scale. Then they may be converted to real numbers, and the paired sample
Wilcoxon_signed-rank_test
Object detection system using radio waves
elevation, or azimuth bin). On the surface it appears that then within a fixed interval of time, perfect, error free, detection could be obtained. This is done
Radar
Function related to statistics and probability theory
comprise an interval of real values. If the region does comprise an interval, then it is called a likelihood interval. Likelihood intervals, and more generally
Likelihood_function
Variable representing a random phenomenon
to whether a random variable is valued in a countable subset or in an interval of real numbers. There are other important possibilities, especially in
Random_variable
Problem in statistics
by integrating the PDF of the posterior distribution over the relevant interval that represents all the probabilities that can be counted as "fair" in
Checking whether a coin is fair
Checking_whether_a_coin_is_fair
Probability distribution
and σ ∗ {\displaystyle \sigma ^{*}} is useful for determining "scatter" intervals, see below. A positive random variable X {\displaystyle X} is log-normally
Log-normal_distribution
Distribution function associated with the empirical measure of a sample
{n}}\left\|{\widehat {F}}_{n}-F\right\|_{\infty }} : Pr ( n ‖ F ^ n − F ‖ ∞ > z ) ≤ 2 e − 2 z 2 . {\displaystyle \Pr \!{\Big (}{\sqrt {n}}\|{\widehat {F}}_{n}-F\|_{\infty
Empirical distribution function
Empirical_distribution_function
Mathematical function for the probability a given outcome occurs in an experiment
{\displaystyle X} lies in a given interval can be computed rigorously by integrating the probability density function over that interval. Let ( Ω , F , P ) {\displaystyle
Probability_distribution
Statistical modeling method
2 ) {\displaystyle {\begin{aligned}H(D,{\vec {\beta }})&=\prod _{i=1}^{n}Pr(y_{i}|{\vec {x_{i}}}\,\,;{\vec {\beta }},\sigma )\\&=\prod _{i=1}^{n}{\frac
Linear_regression
Feature of an electrocardiogram
usually around 0.08 sec (80 ms). It should be essentially level with the PR and TP segments. The ST segment represents the isoelectric period when the
ST_segment
Measure of the asymmetry of random variables
skewness, standard statistical inference procedures such as a confidence interval for a mean will be not only incorrect, in the sense that the true coverage
Skewness
Generalization of the binomial distribution
to a fixed sample size. Pr ( A = 1 , B = 2 , C = 3 ) = 6 ! 1 ! 2 ! 3 ! ( 0.2 1 ) ( 0.3 2 ) ( 0.5 3 ) = 0.135 {\displaystyle \Pr(A{=}1,B{=}2,C{=}3)={\frac
Multinomial_distribution
PR INTERVAL
PR INTERVAL
Surname or Lastname
English (mainly West Midlands)
English (mainly West Midlands) : from Middle English pr(i)est ‘minister of the Church’ (Old English prēost, from Latin presbyter, Greek presbyteros ‘elder’, ‘counselor’, comparative of presbys ‘old man’), used as a nickname, either for someone with a pious manner or possibly for someone who had played the part of a priest in a pageant. It may also have been an occupational name for someone in the service of a priest, and occasionally it may have been used to denote someone suspected of being the son of a priest.A John Priest is recorded as being in Woburn, MA, as early as 1675. The Mayflower Pilgrim Digory Priest of Holland died the first winter at Plymouth in 1620, leaving behind a widow who remarried and two daughters, who did not pass on the family name.
Girl/Female
American, Australian, British, Chinese, Christian, Danish, English, French, German, Gujarati, Indian, Italian, Jamaican, Kannada, Latin, Portuguese, Tamil
Warlike; From the God Mars; Dedicated to Mars; Protector of Man; Martial One; War Like; Defence; Of the Sea; Pr
Surname or Lastname
English
English : occupational name for a priest’s servant, from Middle English pr(i)est ‘priest’, ‘minister’ + man ‘man’.Jewish (Ashkenazic) : occupational name for someone who did ironing and pressing of clothes, from Yiddish pres ‘flat iron’ + man ‘man’.
PR INTERVAL
PR INTERVAL
Boy/Male
Sikh
The light of God
Surname or Lastname
English
English : probably an occupational name for a maker of arrowheads, from an agent derivative of Middle English tippe ‘tip’, ‘head’. On the other hand it may possibly be a bawdy nickname from an agent derivative of Middle English t̄pe(n) ‘to knock over’ (of obscure origin; here with a sexually suggestive sense). The same name has been established in Ireland, in County Kildare, since the beginning of the 14th century.German : topographic name from a Westphalian field name, Tippe, of unexplained etymology.
Boy/Male
Biblical
Rabbit, wild rat, their lip, their brink.
Boy/Male
Hindu
Lord Shiva
Girl/Female
Hindu, Indian, Tamil
Giving Love to Everyone
Female
Yiddish
Variant spelling of Yiddish Heneh, HENE means "favor; grace."
Girl/Female
Tamil
Peacock
Boy/Male
Tamil
Yuvaram | யà¯à®µà®¾à®°à®¾à®®
Boy/Male
Afghan, African, Arabic, Australian, Bengali, German, Hindu, Indian, Marathi, Muslim, Sindhi, Swahili, Turkish
Beautiful; Magnificent; Brilliance; Glory
Girl/Female
Tamil
Greatness
PR INTERVAL
PR INTERVAL
PR INTERVAL
PR INTERVAL
PR INTERVAL
imp. & p. p. Fenced
/); p. pr. & vb. n.) of Fence
p. pr.
of Shet
v. t.
To make a plot, map, pr plan, of; to mark the position of on a plan; to delineate.
superl.
Being in the first part, pr period, of growth; as, a young plant; a young tree.
n.
The quality pr state of being vehement; impetuous force; impetuosity; violence; fury; as, the vehemence.
n.
One who asserts; one who avers pr maintains; an assertor.
n.
An instrument for determining the dip of beds or strata, pr the slope of an embankment or cutting; a kind of plumb level.
v. t.
To set pr place wrongly.
t
ing (p. pr. & vb. n.) of Wit
n.
Difficult delivery pr parturition.
n.
A position or condition which affords entrance, control, pr possession, etc.; as, the key of a line of defense; the key of a country; the key of a political situation. Hence, that which serves to unlock, open, discover, or solve something unknown or difficult; as, the key to a riddle; the key to a problem.
imp. & p. p. Adored
/); p. pr. & vb. n.) of Adore