Phi

Golden ratio symbol

Phi appears in the names of numerous Greek-letter fraternities and sororities: Phi Beta Kappa, Phi Delta Theta, Phi Kappa Psi.

In these contexts, Phi combines with other Greek letters to form organizational names with long traditions in American higher education.

She pledged Phi Mu her sophomore year. (Lowercase phi is the Greek letter used in mathematics and science.)

fraternity

sorority

Women's collegiate social organization

pledge · rush · initiation · interfraternity · letters · house · alumni · philanthropy · social · organization

philosophy

metaphysics

Philosophy of existence's nature

logic · reasoning · concept · abstraction · idealism · rationalism · platonic · theory · wisdom · dialectic

Categories
Opposites
Greek alphabet sequence

Phialpha

First Greek letter

beta · omega · gamma · psi · delta

mathematical constants

Phipi

Circle's fundamental ratio

e · tau · infinity · zero · one

greek vs non-greek alphabets

PhiF

Letter after E

P · Latin letters · Roman alphabet · Hebrew letters · Arabic letters

Phrases
Family

phial

Familiarity
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Used worldwide · Timeless · Rated G