Hypertext Webster Gateway: "tau"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Tau \Tau\ (tou), n. [Gr. tay^.]
The nineteenth letter ([Tau], [tau]) of the Greek alphabet,
equivalent to English t.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Tau \Tau\, n. [Gr. tay^ the letter [tau] (English {T}).]
(Zo["o]l.)
The common American toadfish; -- so called from a marking
resembling the Greek letter tau ([tau]).
{Tau cross}. See Illust. 6, of {Cross}.
From WordNet (r) 1.7 (wn)
tau
n : the 19th letter of the Greek alphabet
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