ˈθə:tɪ n. & adj. --n. (pl. -ies) 1
the product of
three and ten. 2 a
symbol for this (30, xxx, XXX). 3 (in pl.) the numbers
from 30 to 39,
esp. the years of a
century or of a person's
life. --adj.
that amount to thirty. øthirty-first, -second , etc. the
ordinal numbers
between thirtieth and fortieth. Thirty-nine Articles the points of
doctrine assented to by
those taking orders in the
Church of England. thirty-one, -two , etc. the
cardinal numbers between thirty and
forty. thirty-second
note esp. US Mus. =
DEMISEMIQUAVER. thirty-two-mo a
book with 32
leaves to the printing-sheet. øøthirtieth adj. & n. thirtyfold adj. & adv. [OE thritig (as THREE, -TY(2))]