χ U+03C7, χ
GREEK SMALL LETTER CHI
φ
[U+03C6]
Greek and Coptic ψ
[U+03C8]
U+1D61, ᵡ
MODIFIER LETTER SMALL CHI

[U+1D60]
Phonetic Extensions
[U+1D62]
𝜒 U+1D712, 𝜒
MATHEMATICAL ITALIC SMALL CHI
𝜑
[U+1D711]
Mathematical Alphanumeric Symbols 𝜓
[U+1D713]

Translingual

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Alternative forms

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Pronunciation

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  • IPA:(file)

Symbol

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χ

  1. (IPA) a voiceless uvular fricative.
  2. (superscript ⟨ᵡ⟩, IPA) [χ]-fricated release of a plosive (e.g. [qᵡ], sometimes implying an affricate [q͡χ]); [χ]-coloring; or a weak, fleeting or epenthetic [χ].
  3. (mathematics) characteristic function (any meaning) or characteristic polynomial

Usage notes

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  • Not to be confused with κ (k) (the cursive kappa).

See also

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Ancient Greek

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Etymology

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Derived from its majuscule counterpart Χ.

Letter

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χ (kh) (lowercase, uppercase Χ)

  1. Lower-case chi (χεῖ), the 22nd letter of the ancient Greek alphabet. It represented the voiceless aspirated velar plosive /kʰ/ and later the voiceless velar fricative /x/. It is preceded by φ and followed by ψ.

Derived terms

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See also chi

See also

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Greek

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Letter

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χ (ch) (lowercase, uppercase Χ)

  1. The lower case letter chi (χι), the 22nd letter of the modern Greek alphabet.

See also

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