I. ˈfiftē, -ti adjective
Etymology: Middle English, from Old English fīftig, from fīftig, n., group of 50, from fīf five + -tig group of ten — more at five , eighty
: being one more than 49 in number
fifty years
— see number table
II. pronoun, plural in construction
Etymology: Middle English, from fifty, adjective
: 50 countable persons or things not specified but under consideration and being enumerated
fifty are here
fifty were found
III. noun
( -es )
Etymology: Middle English
1. : five tens : twice 25 : 10 fives
2.
a. : 50 units or objects
a total of fifty
b. : a group or set of 50
arranged by fifties
3.
a. : the numerable quantity symbolized by the arabic numerals 50
b. : the letter L
4. : the 50th in a set or series ; especially : an article of clothing of the 50th size
a fifty is too big
5. : something having as an essential feature 50 units or members
6. fifties plural
a. : the numbers 50 to 59 inclusive
a score in the fifties
low grades in the fifties
b. : the members of a series or set of successive numbers that end in 50 to 59 inclusive
the fifties of the preceding century
lives in the fifties in the next block
c. : the portion of a continuum lying between 50 and 60 on a scale of measurement or segmentation
temperatures in the fifties tomorrow
a man in his fifties
dresses selling in the fifties
in the latitude of the fifties
7.
a. : a fifty-pound note
b. : a fifty-dollar bill
8. : a 50 caliber gun — usually written .50