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Twenty-first letter in the Greek alphabet
Phi (/ˈfaɪ, ˈfiː/ FY, FEE; uppercase Φ, lowercase φ or ϕ; Ancient Greek: ϕεῖ pheî [pʰéî̯]; Modern Greek: φι fi [fi]) is the twenty-first letter of the
Phi
Topics referred to by the same term
Look up Phi or phi in Wiktionary, the free dictionary. Phi (Φ, φ, or ϕ) is the 21st letter of the Greek alphabet. Phi or PHI may also refer to: Golden
Phi_(disambiguation)
Honor society for the liberal arts and sciences in the United States
The Phi Beta Kappa Society (ΦΒΚ) is the oldest academic honor society in the United States. Founded in 1776 at the College of William & Mary in Virginia
Phi_Beta_Kappa
Thai archipelago in the Strait of Malacca
The Phi Phi Islands (Thai: หมู่เกาะพีพี, RTGS: Mu Ko Phiphi, pronounced [mùː kɔ̀ʔ pʰīː.pʰīː]) are an island group in Thailand located in the Strait of
Phi_Phi_Islands
International collegiate honor society
The Honor Society of Phi Kappa Phi (or simply Phi Kappa Phi or ΦΚΦ) is an honor society established in 1897 to recognize and encourage superior scholarship
Phi_Kappa_Phi
Island in the Andaman Sea
Ko Phi Phi Le or Ko Phi Phi Leh (Thai: เกาะพีพีเล, RTGS: Ko Phiphi Le, pronounced [kɔ̀ʔ pʰīː.pʰīː lēː]) is an island of the Phi Phi Archipelago, Andaman
Ko_Phi_Phi_Le
Binary star system in the constellation Virgo
Phi Virginis (φ Virginis, abbreviated Phi Vir, φ Vir) is a binary star in the zodiac constellation of Virgo. It can be seen with the naked eye, having
Phi_Virginis
American collegiate social fraternity
Chi Phi (ΧΦ) is the oldest American men's college social fraternity that was established as the result of the merger of three separate organizations that
Chi_Phi
Type of chemical bond
In chemistry, phi bonds (φ bonds) are usually covalent chemical bonds, where six lobes of one involved atomic orbital overlap six lobes of the other involved
Phi_bond
Topics referred to by the same term
A phi' (AΦ) may refer to: Alkaline phosphatase Alpha Phi This disambiguation page lists articles associated with the title A phi. If an internal link incorrectly
A_phi
Alleged sex crime in Ithaca, New York, US
alleged that she was drugged and gang-raped by seven students at Cornell's Chi Phi fraternity house on campus on the evening of October 19–20, 2024. She reported
2024 Cornell University rape allegations
2024_Cornell_University_rape_allegations
American collegiate social fraternity
Phi Sigma Phi (ΦΣΦ) (Phi Sig) is a national fraternity in the United States founded on July 30, 1988, in South Bend, Indiana, by chapters formerly of Phi
Phi_Sigma_Phi
American collegiate fraternity (1915–1939)
Phi Pi Phi (ΦΠΦ) was a social fraternity founded at Northwestern University in 1915. It merged with Alpha Sigma Phi in 1939. Phi Pi Phi was founded on
Phi_Pi_Phi
Historically African American sorority
Zeta Phi Beta Sorority, Inc. (ΖΦΒ) is a historically African American sorority. Since its founding, Zeta Phi Beta has focused on addressing social causes
Zeta_Phi_Beta
Historically African-American fraternity
Omega Psi Phi Fraternity, Inc. (ΩΨΦ) is a historically African American fraternity. It was founded on November 17, 1911 at Howard University in Washington
Omega_Psi_Phi
North American collegiate sorority
Alpha Phi International Women's Fraternity (ΑΦ, also known as APhi) is an international sorority with 175 active chapters and over 270,000 initiated members
Alpha_Phi
Series of x86 manycore processors from Intel
Xeon Phi is a discontinued series of x86 manycore processors designed and made by Intel. It was intended for use in supercomputers, servers, and high-end
Xeon_Phi
Phi Kappa Phi is an international collegiate honor society. In the following list of chapters, active chapters are indicated in bold and inactive chapters
List of Phi Kappa Phi chapters
List_of_Phi_Kappa_Phi_chapters
American writer
Bao Phi is a Vietnamese-American spoken word artist, writer and community activist living in Minnesota. Bao Phi's collection of poems, Sông I Sing, was
Bao_Phi
Number, approximately 1.618
a>b>0, a is in a golden ratio to b if a+ba=ab=φ, where the Greek letter phi (φ or ϕ, or Φ) denotes the golden ratio. The constant φ satisfies
Golden_ratio
National service fraternity (founded in the US, 1925)
Alpha Phi Omega (ΑΦΩ), commonly known as APO, but also A-Phi-O and A-Phi-Q, is a national co-educational service fraternity. It is the largest collegiate
Alpha_Phi_Omega
American collegiate fraternity
Phi Kappa Psi (ΦΚΨ), commonly known as Phi Psi, is an American collegiate social fraternity that was founded at Jefferson College in Canonsburg, Pennsylvania
Phi_Kappa_Psi
Historically African American fraternity
Alpha Phi Alpha Fraternity, Inc. (ΑΦΑ) is the oldest intercollegiate historically African American fraternity. It was initially a literary and social
Alpha_Phi_Alpha
American collegiate sorority
Phi Mu (ΦΜ) is an American college women's fraternity. The fraternity was founded at Wesleyan College in Macon, Georgia as the Philomathean Society in
Phi_Mu
African-American fraternity
Sigma Pi Phi (ΣΠΦ), also known as The Boulé, is an African American professional fraternity. Founded in Philadelphia, Pennsylvania, in 1904, it is the
Sigma_Pi_Phi
Concept in pronoun-noun agreement
linguistics, especially within generative grammar, phi features (denoted with the Greek letter φ 'phi') are the morphological expression of a semantic process
Phi_features
Microsoft free and open-source large language model
Phi is a series of small language models developed by Microsoft that are open-weights and can run locally on one's device. The initial version, Phi-1
Phi_(language_model)
African American collegiate fraternity
Gamma Phi (ΓΦ) was an African American fraternity founded on March 1, 1905 at Wilberforce University. It went defunct sometime before 1950. Gamma Phi is
Gamma_Phi
North American collegiate fraternity
Phi Delta Theta (ΦΔΘ), commonly known as Phi Delt, is an international college social fraternity founded in 1848, and currently headquartered, at Miami
Phi_Delta_Theta
Phi Delta Phi is an international legal honor society and the oldest legal organization in continuous existence in the United States. Its chapters at
List of Phi Delta Phi chapters
List_of_Phi_Delta_Phi_chapters
Yacht
PHI or Phi is a 58.5 m (192 ft) superyacht delivered by noted Dutch shipbuilders Royal Huisman, in 2021, costing £38 million ($50 million). Along with
PHI_(yacht)
Tai deity
Phi Fa or Phi Thaen is the god of rain and the sky, the ruler of the heavens, and the creator god in the Tai folk religion. Phi Fa plays a prominent role
Phi_Fa
Topics referred to by the same term
Delta Phi Kappa may refer to: Delta Phi Kappa, a sorority at University of Southern California Delta Phi Kappa (LDS Church), a former fraternity for returned
Delta_Phi_Kappa
Phi Kappa Phi is an international collegiate honor society. Following is a list of some notable members of Phi Kappa Phi. Joseph E. Aoun, 7th president
List_of_Phi_Kappa_Phi_members
North American collegiate social fraternity
Phi Gamma Delta (ΦΓΔ), commonly known as Phi Gam and sometimes written as FIJI, is a North American social fraternity with 139 active chapters and 13 colonies
Phi_Gamma_Delta
North American collegiate sorority
Pi Beta Phi (ΠΒΦ), often known simply as Pi Phi, is an international women's fraternity founded at Monmouth College, in Monmouth, Illinois, on April 28
Pi_Beta_Phi
Statistical measure of association for two binary variables
In statistics, the phi coefficient, also known as the mean square contingency coefficient or Yule coefficient of correlation and commonly denoted by φ
Phi_coefficient
Star in the constellation Cassiopeia
Phi Cassiopeiae is a multiple star system in the northern constellation of Cassiopeia. Its name is a Bayer designation that is Latinized from φ Cassiopeiae
Phi_Cassiopeiae
American college sorority (1920–1933)
1920. It changed its name to Sigma Phi Beta in 1927 and merged with Phi Alpha Chi in 1928. Sigma Phi Beta merged into Phi Omega Pi in 1933. Sigma Sigma Omicron
Sigma_Sigma_Omicron
Figure of Thai folklore
Phi Phong (Thai: ผีโพง, pronounced [pʰīː pʰɔːŋ]; also known as Phi Pao (ผีเป้า, pronounced [pʰīː pǎw]) in northeastern Thailand) or simply Phong is a ghost
Phong_(ghost)
Forest god of the Kui in Southeast Asia
Phi Pakam Ajing (ผีปะกำอาจีง) or Phi Pakam (ผีปะกำ) is the supreme god of the forests according to the beliefs of the Kui people. They are worshipped in
Phi_Pakam
Island in the Andaman Sea
Ko Phi Phi Don (Thai: เกาะพีพีดอน, RTGS: Ko Phiphi Don, pronounced [kɔ̀ʔ pʰīː.pʰīː dɔ̄ːn]) is the largest of the islands in the Phi Phi archipelago, in
Ko_Phi_Phi_Don
International historically Black American collegiate fraternity
Phi Beta Sigma Fraternity, Inc. (ΦΒΣ) is a historically African American fraternity. It was founded at Howard University in Washington, D.C., in 1914
Phi_Beta_Sigma
Star in the constellation Auriga
Phi Aurigae is a giant star in the northern constellation of Auriga. Its name is a Bayer designation that is Latinized from φ Aurigae, and abbreviated
Phi_Aurigae
American Italian college fraternity
Alpha Phi Delta (ΑΦΔ), commonly referred to as APD, is an American collegiate fraternity. Alpha Phi Delta was established at Syracuse University in 1914
Alpha_Phi_Delta
American collegiate fraternity
Sigma Phi Society (ΣΦ) is an American college fraternity. Established in 1827 at Union College in Schenectady, New York, it was the second Greek letter
Sigma_Phi
Biological database
The Pathogen-Host Interactions database (PHI-base) is a biological database that contains manually curated information on genes experimentally proven
PHI-base
Optical illusion of apparent motion
The term phi phenomenon is used in a narrow sense for an apparent motion that is observed if two nearby optical stimuli are presented in alternation with
Phi_phenomenon
American actor, streamer, singer, cosplay artist, and former drag performer
cosplay artist, and former drag performer who performed under the name Phi Phi O'Hara. In the O'Hara persona, Carey came to international attention as
Jaremi_Carey
Vietnamese-born American singer (1970-2021)
Phạm Phi Nhung (10 April 1970 – 28 September 2021) was a Vietnamese-American singer, actress and humanitarian. She specialised in Dan Ca and Tru Tinh
Phi_Nhung
Filipino college fraternity
Tau Gamma Phi (ΤΓΦ), also known as Triskelions’ Grand Fraternity, is a fraternity established in the Philippines. Its members call themselves Triskelions
Tau_Gamma_Phi
Professional law fraternity
Delta Theta Phi (ΔΘΦ) is an international professional law fraternity and a member of the Professional Fraternity Association. Delta Theta Phi is the only
Delta_Theta_Phi
Asian-American-interest collegiate fraternity (1929–2023)
Pi Alpha Phi Fraternity, Inc. (ΠΑΦ, also Pi Alpha Phi or PAPhi) was an American university-level fraternity. It was founded in 1929 at the University of
Pi_Alpha_Phi
North American collegiate fraternity
Sigma Phi Epsilon (ΣΦΕ), commonly known as SigEp, is a social college fraternity for male college students in the United States. It was founded on November
Sigma_Phi_Epsilon
American collegiate women's fraternity
Phi Alpha (ΘΦΑ), commonly known as Theta Phi, is a women's fraternity founded at the University of Michigan – Ann Arbor on August 30, 1912. Theta Phi
Theta_Phi_Alpha
Phi Sigma Kappa is a college fraternity that was established in 1873, at Massachusetts Agricultural College in Amherst (now the University of Massachusetts
List of Phi Sigma Kappa members
List_of_Phi_Sigma_Kappa_members
Vietnamese shrine
Imperial Concubine Phi Yến (Vietnamese: Thứ phi Hoàng Phi Yến), born Lê Thị Răm (Hán-Nôm: 黎氏菻), is a controversial local legend of the Côn Đảo archipelago
Thứ_phi_Hoàng_Phi_Yến
by the merger of three law fraternities: Alpha Kappa Phi, Delta Phi Delta, and Theta Lambda Phi. The merged chapters continued to use their original charter
List of Delta Theta Phi chapters
List_of_Delta_Theta_Phi_chapters
2026 Vietnamese film
Phi Phong: The Blood Demon (Vietnamese: Phi Phông: Quỷ Máu Rừng Thiêng) is a 2026 Vietnamese supernatural horror film directed by Do Quoc Trung. The film
Phi_Phong:_The_Blood_Demon
Taiwanese honor society
The Phi Tau Phi Scholastic Honor Society of the Republic of China (simply Phi Tau Phi or ΦΤΦ; Chinese: 中華民國斐陶斐榮譽學會) is an honor society based in Taiwan
Phi_Tau_Phi
ESA branch
The Φ-lab (Phi-lab) is the Earth Observation innovation lab at the European Space Agency (ESA). It has the mission of accelerating the future of Earth
Phi_Lab
International fraternity for performing arts
Phi Beta Fraternity (ΦΒ) is an American professional collegiate fraternity for the creative and performing arts. It was founded in 1912 at Northwestern
Phi_Beta
Community college honor society
Phi Theta Kappa (ΦΘΚ or PTK) is an honor society for students of associate degree-granting colleges. The society was established in 1918 at Stephens College
Phi_Theta_Kappa
Information about healthcare status of individual
Protected health information (PHI) is information about the provision of health care or payment for health care that is created or collected by a covered
Protected_health_information
International medical fraternity
name. Phi Chi Society (Phi Chi East) was founded in 1889, at the University of Vermont in Burlington, Vermont. Phi Chi Medical Fraternity (Phi Chi South)
Phi_Chi
American high school fraternity
Phi Kappa National Fraternity (ΦΚ) is a secondary school social fraternity. Since its founding in the early twentieth century, Phi Kappa has chartered
Phi_Kappa_(secondary)
American collegiate fraternity
Delta Phi (ΔΦ) is a fraternal society established in Schenectady, New York, on November 17, 1827. Its first chapter was founded at Union College, and
Delta_Phi
Operator in quantum mechanics
{\begin{matrix}a(\phi _{i})|\phi _{1},\phi _{2},\cdots ,\phi _{i-1},\phi _{i},\phi _{i+1},\cdots ,\phi _{n}\rangle _{\nu }&=&{\sqrt {N_{i}}}|\phi _{1},\phi _{2},\cdots
Particle_number_operator
Topics referred to by the same term
Phi Alpha may refer to: Phi Alpha Literary Society, a men's literary society at Illinois College Phi Alpha (fraternity), a historically Jewish fraternity
Phi_Alpha
Number of integers coprime to and less than n
the Greek letter phi as φ ( n ) {\displaystyle \varphi (n)} or ϕ ( n ) {\displaystyle \phi (n)} , and may also be called Euler's phi function. In other
Euler's_totient_function
National Christian sisterhood
Kappa Phi (ΚΦ), also called the Kappa Phi Club, is an American national Christian student society that was established at the University of Kansas in
Kappa_Phi
Native ethnic religion of the Tai people
folk religion, Tai folk beliefs, Satsana Phi (Lao: ສາສະໜາຜີ, Thai: ศาสนาผี; /sàːt.sa.nǎː.pʰǐː/) or Ban Phi (Ahom: 𑜈𑜃𑜫 𑜇𑜣), is the ancient native
Tai_folk_religion
Star in the constellation Vela
Phi Velorum (φ Vel, φ Velorum) is a star in the constellation Vela. It is a blue-white B-type supergiant with an apparent magnitude of +3.53. It is approximately
Phi_Velorum
International college sorority
Gamma Phi Beta (ΓΦΒ, also known as GPhi, GPhiB, or Gamma Phi) is an international college sorority. It was founded in Syracuse University in 1874 and was
Gamma_Phi_Beta
American professional journalism fraternity (1909–1996)
Theta Sigma Phi (ΘΣΦ) was an American honor society and professional fraternity for women in journalism. It was established in 1909 at the University
Theta_Sigma_Phi
International legal honor society
Phi Delta Phi (ΦΔΦ; commonly known as Phid or PDP) is a law-student honor society and professional fraternity founded in 1869 at the University of Michigan
Phi_Delta_Phi
International collegiate medical fraternity
Phi Delta Epsilon (ΦΔΕ) (commonly known as PhiDE) is a co-ed international medical fraternity founded at Cornell Medical College and a member of the Professional
Phi_Delta_Epsilon
Topics referred to by the same term
Phi Sigs is a nickname which might refer to members of either: Phi Sigma Kappa (ΦΣΚ) men's social fraternity Phi Sigma Epsilon (ΦΣΕ) defunct men's social
Phi_Sigs
Star in the constellation Perseus
Phi Persei, Latinized from (Phi Per, φ Persei, φ Per) formally named Dajiangjunbei, is a class B2Vep fourth-magnitude star in the constellation Perseus
Phi_Persei
Defunct American collegiate Jewish fraternity
Phi Alpha (ΦΑ) was an American historically Jewish fraternity founded in 1914. It merged with Phi Sigma Delta in 1959. It was a member of the National
Phi_Alpha_(fraternity)
North American collegiate fraternity
Phi Kappa Theta (ΦΚΘ), commonly known as Phi Kap, is a national social fraternity that has over 35 active chapters and colonies at universities across
Phi_Kappa_Theta
Mathematical gradient operator in certain coordinate systems
\right]d\phi \,dz+\left[A_{\phi }(\phi {+}d\phi )-A_{\phi }(\phi )\right]d\rho \,dz+\left[A_{z}(z{+}dz)-A_{z}(z)\right]d\rho (\rho {+}d\rho /2)\,d\phi }{\rho
Del in cylindrical and spherical coordinates
Del_in_cylindrical_and_spherical_coordinates
North American collegiate secret society and fraternity
Phi Kappa Sigma (ΦΚΣ), also known as Phi Kap, Skulls, Skullhouse, or PKS, is an international all-male college secret society and social fraternity. Commonly
Phi_Kappa_Sigma
Topics referred to by the same term
Phi Kappa may refer to: Phi Kappa (Catholic fraternity), a higher education fraternity founded in 1889 and one of the two fraternities that merged to
Phi_Kappa
Defunct Catholic collegiate fraternity
Theta Kappa Phi (ΘΚΦ) was an American social fraternity for Catholics founded on October 1, 1919, at Lehigh University in Bethlehem, Pennsylvania. On
Theta_Kappa_Phi
including Zeta Psi, Kappa Kappa Kappa, Phi Sigma Kappa, Sigma Nu, Sigma Alpha Epsilon, Chi Phi, Theta Delta Chi, Phi Gamma Delta, Sigma Chi, and Gamma Delta
Dartmouth College fraternities and sororities
Dartmouth_College_fraternities_and_sororities
Pi, Delta Tau Delta, and Phi Kappa Psi, and 4 sororities, Delta Gamma, Kappa Alpha Theta, Kappa Kappa Gamma, and Pi Beta Phi. The fraternities are governed
Washington & Jefferson College fraternities and sororities
Washington_&_Jefferson_College_fraternities_and_sororities
American law fraternity (1902–1989)
Sigma Nu Phi (ΣΝΦ), also known as Adelphia Sigma Nu Phi, was a professional law fraternity and a member of the Professional Fraternity Association. Adelphia
Sigma_Nu_Phi
Canadian actress, writer, and producer
established PHI in Montreal, Canada. PHI consists of the PHI Foundation for Contemporary Art (2007, formerly DHC/ART), the PHI Centre (2012), and the PHI Studio
Phoebe_Greenberg
North American collegiate fraternity
Alpha Sigma Phi (ΑΣΦ), commonly known as A Sig, is an intercollegiate men's social fraternity. Founded in 1845 at Yale University in New Haven, Connecticut
Alpha_Sigma_Phi
Co-ed fraternity at Dartmouth College
Phi Tau (ΦΤ) is a coeducational fraternity at Dartmouth College in Hanover, New Hampshire. Founded in 1905 as the Tau chapter of Phi Sigma Kappa, the organization
Phi_Tau
American art honor society (defunct)
Delta Phi Delta National Art Honor Society (ΔΦΔ) was an American collegiate art honor society. Delta Phi Delta was a member of the Association of College
Delta_Phi_Delta
American secret society
Kappa Beta Phi (ΚΒΦ) is a secret society with at least one surviving chapter, based on Wall Street in New York City, that is made up of high-ranking financial
Kappa_Beta_Phi
International historically African American collegiate fraternity
Iota Phi Theta Fraternity, Inc. (ΙΦΘ) is a historically African American fraternity. It was founded on September 19, 1963, at Morgan State University
Iota_Phi_Theta
Defunct American collegiate sorority
Phi Delta (ΦΔ) was an American college sorority. It formed in 1927 through the merger of local sororities at New York University in New York City and
Phi_Delta
American collegiate fraternity 1910–1985
until its merger with the Phi Sigma Kappa (ΦΣΚ) fraternity. In 1985, most Phi Sigma Epsilon chapters participated in the merger. Phi Sigma Kappa incorporated
Phi_Sigma_Epsilon
Honor society at Ohio State University
Phi Sigma (ΦΣ) is an honor society for students of biological sciences, formed at Ohio State University. The Phi Sigma honor society was founded on March
Phi_Sigma
American college fraternity (1870–1890)
The Zeta Phi Society (ΖΦ) was a regional American fraternity founded in 1870 at the University of Missouri in Columbia, Missouri. It was the first independent
Zeta_Phi
American collegiate fraternity
Delta Sigma Phi (ΔΣΦ), commonly known as Delta Sig, is a fraternity established in 1899 at The City College of New York (CCNY). It was likely the first
Delta_Sigma_Phi
Topics referred to by the same term
Phi Psi is an American collegiate professional engineering fraternity. Phi Psi may also refer to: Phi Kappa Psi, an American collegiate fraternity Dihedral
Phi_Psi
travel, tourism, insurance
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PHI
PHI
PHI
PHI
PHI
PHI
PHI
PHI
travel, tourism, insurance