HyperDic: tau

English > 1 sense of the word *tau*:
NOUN	communication	tau	the 19th letter of the Greek alphabet

English > *tau*: 1 sense > noun 1, communication
Meaning	The 19th letter of the Greek alphabet.
Member of	Greek alphabet	The alphabet used by ancient Greeks
Broader	letter, letter of the alphabet, alphabetic character	The conventional characters of the alphabet used to represent speech
Spanish	tau
Catalan	tau