phi

phi  (f, f)

n.

The 21st letter of the Greek alphabet. See Table at alphabet.

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[Late Greek ph, from Greek phei.]

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phi [faɪ]

n pl phis

(Linguistics / Letters of the Alphabet (Foreign)) the 21st letter in the Greek alphabet, Φ, φ, a consonant, transliterated as ph or f

Thesaurus

Noun

1.

phi - the 21st letter of the Greek alphabet Greek alphabet - the alphabet used by ancient Greeks alphabetic character, letter of the alphabet, letter - the conventional characters of the alphabet used to represent speech; "his grandmother taught him his letters"