fifty

views updated Jun 11 2018

fif·ty / ˈfiftē/ • cardinal number (pl. -ties) the number equivalent to the product of five and ten; half of one hundred; 50. (Roman numeral: l or L.) ∎  (fifties) the numbers from 50 to 59, esp. the years of a century or of a person's life: Elvis is the icon of the Fifties. ∎  fifty years old: she looked about fifty. ∎  fifty miles an hour: doing about fifty. ∎  a fifty-dollar bill.DERIVATIVES: fif·ti·eth / ˈfiftē-i[unvoicedth]/ ordinal number