Θ

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See also: θ, θ', ө, ѳ, and

Θ U+0398, Θ
GREEK CAPITAL LETTER THETA
Η
Greek and Coptic Ι

Translingual

Symbol

Θ

  1. (set theory) Θ, the ordinal number with the same cardinality as the smallest set larger than the real numbers; the smallest nonzero ordinal number such that there exists no surjection onto it from the real numbers.
  2. (physics) A pentaquark.
  3. (speech pathology) Protruded tongue.

Ancient Greek

Etymology

From Phoenician 𐤈 (, ṭēt).

Letter

Θ (Th) (uppercase, lowercase θ)

  1. The letter theta (θῆτα), the eighth letter of the ancient Greek alphabet.

Derived terms

See also

Greek

Letter

Θ (Th) (uppercase, lowercase θ)

  1. The upper case letter theta (θήτα), the eighth letter of the modern Greek alphabet.

Numeral

Θ (Th)

  1. The number nine in Greek numerals.

Derived terms

  • (,Th, The number 9000 in Greek numerals)

Descendants

See also

Wakhi

Pronunciation

Letter

Θ (lower case ϑ)

  1. A letter of the Wakhi alphabet, written in the Latin script.