trideka

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Esperanto[edit]

Esperanto ordinal numbers
 <  29-a 30-a 31-a  > 
    Ordinal : trideka
    Cardinal : tridek

Etymology[edit]

tri +‎ dek +‎ -a

Adjective[edit]

trideka (plural tridekaj, accusative singular tridekan, accusative plural tridekajn)

  1. (ordinal number) thirtieth