n. the nineteenth letter of the Greek alphabet (T). tau cross a T-shaped cross. tau particle Physics an unstable, heavy, and charged elementary particle of the lepton class.
[ ME f. Gk ]
n. the nineteenth letter of the Greek alphabet (T). tau cross a T-shaped cross. tau particle Physics an unstable, heavy, and charged elementary particle of the lepton class.
[ ME f. Gk ]
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012