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tau

   Also found in: Medical, Acronyms, Wikipedia, Hutchinson 0.03 sec.
tau  (tou, tô)
n.
1. The 19th letter of the Greek alphabet. See Table at alphabet.
2. An elementary particle of the lepton family, having a mass about 3,550 times that of the electron, a negative electric charge, and a mean lifetime of 3 × 10-13 seconds. See Table at subatomic particle.
[Greek, of Phoenician origin; see tww in Semitic roots.]
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.tautau - the 19th letter of the Greek alphabet
Greek alphabet - the alphabet used by ancient Greeks
alphabetic character, letter of the alphabet, letter - the conventional characters of the alphabet used to represent speech; "his grandmother taught him his letters"


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The outlying villages, they say, are by them called {kappa omega mu alpha iota}, by the Athenians {delta eta mu iota}: and they assume that Comedians were so named not from {kappa omega mu 'alpha zeta epsilon iota nu}, 'to revel,' but because they wandered from village to village (kappa alpha tau alpha / kappa omega mu alpha sigma), being excluded contemptuously from the city.
The Poetics of Aristotle by Aristotle View in context
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