What is the meaning of Τ?
An irrational constant defined as the ratio of the circumference of a circle to its radius, equal to the radian measure of a full turn; approximately 6.283185307 (equal to 2π, or twice the value of π).
a voiceless dental plosive (IPA [t̪]).
A voiced coronal click consonant (dental ⟨τ̦⟩ = IPA [ɡ͜ǀ]; cacuminal ⟨τ̣⟩ = IPA [ɡ͜ǃ]).
Lower-case tau (ταῦ), the 19th letter of the ancient Greek alphabet. It represented the voiceless unaspirated alveolar or dental plosive /t/. It is preceded by σ and followed by υ.
The lower case letter tau (ταυ), the 19th letter of the modern Greek alphabet.
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