See also: Φ [U+03A6 GREEK CAPITAL LETTER PHI], ф [U+0444 CYRILLIC SMALL LETTER EF], Ф [U+0424 CYRILLIC CAPITAL LETTER EF], Փ [U+0553 ARMENIAN CAPITAL LETTER PIWR], and φ.

φ U+03C6, φ
GREEK SMALL LETTER PHI
υ
[U+03C5]
Greek and Coptic χ
[U+03C7]

Translingual

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Etymology 1

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Named by mathematician Mark Barr after Ancient Greek Φειδίας (Pheidías) (Phidias), who supposedly used the golden ratio in his work.

Symbol

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φ

 
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Wikipedia
  1. (mathematics) The golden ratio, an irrational number with a value of approximately 1.618033988 which expresses the relationship that the sum of two quantities is to the larger quantity as the larger is to the smaller.

Etymology 2

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Symbol

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φ

  1. (mathematics) Euler's totient function, an arithmetic function that counts totatives
  2. (UPA) a voiceless labiodental fricative (IPA [ɸ]).

Ancient Greek

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Etymology

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Derived from its majuscule counterpart Φ.

Letter

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φ (ph) (lowercase, uppercase Φ)

  1. Lower-case phi (φεῖ), the 21st letter of the ancient Greek alphabet. It represented the voiceless aspirated bilabial plosive /pʰ/ and later the voiceless labiodental fricative /f/. It is preceded by υ and followed by χ.

Derived terms

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See also phi

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Greek

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Letter

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φ (f) (lowercase, uppercase Φ)

  1. The lower case letter phi (φι), the 21st letter of the modern Greek alphabet.

See also

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