thirty-ninth

From thirty-nine +‎ -th (ordinal suffix).

• (UK) IPA^(key): /ˌθɜːti ˈnaɪnθ/
• (US) IPA^(key): /ˌθɚti ˈnaɪnθ/

thirty-ninth

1. The ordinal form of the number thirty-nine, describing a person or thing in position number 39 of a sequence.

   The answer appears on the thirty-ninth page of the book.

   She finished thirty-ninth in the race.

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

• 39th, 39^th

thirty-ninth (plural thirty-ninths)

1. One of thirty-nine equal parts of a whole.

   A thirty-ninth of 780 is 20.