I. ˈfiftēə̇th, -tiə̇th adjective
Etymology: Middle English fiftithe, adjective & noun, from Old English fīftigotha (akin to Old Norse fimmtugandi ), from fīftig fifty + -otha, -tha, -th
1. : being number 50 in a countable series
the fiftieth day
— see number table
2. : being one of 50 equal parts into which something is divisible
a fiftieth share
II. noun
( -s )
Etymology: Middle English fiftithe
1. : number 50 in a countable series
2. : the quotient of a unit divided by 50 : one of 50 equal parts of something
one fiftieth of the total