ˈtwentɪ n. & adj. --n. (pl. -ies) 1
the product of
two and ten. 2 a
symbol for this (20, xx, XX). 3 (in pl.) the numbers
from 20 to 29,
esp. the years of a
century or of a person's
life. 4 colloq. a
large indefinite number (have
told you twenty times). --adj.
that amount to twenty. øtwenty-first, -second , etc. the
ordinal numbers
between twentieth and thirtieth. twenty-one, -two , etc. the
cardinal numbers between twenty and
thirty. twenty-twenty (or 20/20) 1 denoting
vision of
normal acuity. 2 colloq. denoting
clear perception or
hindsight. øøtwentieth adj. & n. twentyfold adj. & adv. [OE twentig (perh. as TWO, -TY(2))]