ˈeɪtɪ n. & adj. --n. (pl. -ies) 1
the product of
eight and ten. 2 a
symbol for this (80, lxxx, LXXX). 3 (in pl.) the numbers
from 80 to 89,
esp. the years of a
century or of a person's
life. --adj.
that amount to eighty. øeighty-first, -second , etc. the
ordinal numbers
between eightieth and ninetieth. eighty-one, -two , etc. the
cardinal numbers between eighty and
ninety. øøeightieth adj. & n. eightyfold adj. & adv. [OE -eahtatig (as EIGHT, -TY(2))]