Associations to the word «Phi»

Wiktionary

PHI, noun. Φ, the 21st letter of the Euclidean and modern Greek alphabet, usually romanized as "ph".
PHI, noun. (mathematics) The golden ratio.
PHI, noun. A visual illusion whereby a sequential pattern of lights produces a false sense of motion.(Can we verify([1]) this sense?)
PHI BETE, noun. (informal) (singulare tantum) The Phi Beta Kappa Society
PHI BETE, noun. (informal) (countable) A member of that society.
PHI BETES, noun. Plural of Phi Bete

Dictionary definition

PHI, noun. The 21st letter of the Greek alphabet.

Wise words

A word is not a crystal, transparent and unchanged; it is the skin of a living thought and may vary greatly in color and content according to the circumstances and time in which it is used.
Oliver Wendell Holmes, Jr.