fifty-seventh

From fifty-seven +‎ -th (ordinal suffix).

• IPA^(key): /ˌfɪfti ˈsɛvənθ/

fifty-seventh

1. The ordinal form of the number fifty-seven, describing a person or thing in position number 57 of a sequence.

   The answer appears on the fifty-seventh page of the book.

   She finished fifty-seventh in the race.

English ordinal numbers may function as either an adjective or as a noun, and almost never appear in the plural.

• 57th, 57^th

fifty-seventh (plural fifty-sevenths)

1. One of fifty-seven equal parts of a whole.

   A fifty-seventh of 1140 is 20.

• seventy-fifth