fifty
n. A1 Beginner Oxford US //ˈfɪfti// UK //fˈɪfti// fifty
n. the number 50. It comes after forty-nine and before fifty-one.
n. the cardinal number equivalent to the product of five and ten.
There are fifty students in the classroom.
My grandmother is celebrating her fifty years of marriage with a large party this weekend.
The survey indicates that over fifty percent of the local population supports the construction of a new public library in the city center.
PIE word *pénkʷe From Middle English fifty, from Old English fīftiġ, from Proto-Germanic *fimf tigiwiz (“five tens”). By surface analysis, five + -ty.
Usage
Functions as a determiner when placed before a noun or as a noun when referring to the number itself.