thirty-one

From Wiktionary
English numbers (edit)
 ←  30 31 32  → 
    Cardinal: thirty-one
    Ordinal: thirty-first

Pronunciation[change]

Determiner[change]

Determiner
thirty-one

  1. (number) (indefinite) (plural) (count) (ordinal thirty-first) The number 31.
    There are thirty-one tennis balls in the basket.