| Phi (letter) |
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Phi (upper case Φ or ; lower case φ, , or ) is the 21st letter of the Greek Alphabet . In modern Greek it is pronounced ''fee'', but a common Anglicized pronunciation is ''fie''. In modern Greek, it represents a Voiceless Labiodental Fricative . In Ancient Greek it represented [ , an Aspirated Voiceless Bilabial Plosive . In the system of Greek Numerals it has a value of 500. The lower-case letter φ (or often its variant, ) is used as a symbol for:
The upper-case letter Φ is used as a symbol for;
See also Phi Phenomenon . |