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Φ

From Wiktionary, the free dictionary
See also: φ [U+03C6 GREEK SMALL LETTER PHI], ф [U+0444 CYRILLIC SMALL LETTER EF], Ф [U+0424 CYRILLIC CAPITAL LETTER EF], Փ [U+0553 ARMENIAN CAPITAL LETTER PIWR], φ., and [U+4E2D CJK UNIFIED IDEOGRAPH-4E2D]

Φ U+03A6, Φ
GREEK CAPITAL LETTER PHI
Υ
[U+03A5]
Greek and Coptic Χ
[U+03A7]

Translingual

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Symbol

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Φ

  1. (mathematics) an angle
  2. (mathematics) golden ratio conjugate ≈ 0.618...
  3. (physics) magnetic flux
  4. Phrateres, a non-profit social-service organization for women in North America
  5. (linguistics) A wildcard for a pharyngeal consonant
    synonyms: sometimes covered by H

Usage notes

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This letter has multiple lowercase forms:

  • φ, the form normally used in Modern Greek;
  • ϕ, often used as a symbol for various things; or ɸ, the form properly used if denoting a voiceless bilabial fricative (these two forms are, in many fonts, indistinguishable or nearly so; Times New Roman is one font in which they are clearly distinct).
  • 𝜙, sometimes used as a symbol.

See also

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Ancient Greek

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Etymology

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Uncertain; possibly a modification of Ϙ (Q) (koppa) as some cases of Ancient Greek /pʰ/ come from earlier /kʷʰ/.

Letter

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Φ (Ph) (uppercase, lowercase φ)

  1. The letter phi (φεῖ), the 21st letter of the ancient Greek alphabet.

Derived terms

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See also

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Greek

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Letter

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Φ (F) (uppercase, lowercase φ)

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

See also

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