Serbo-Croatian

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Serbo-Croatian numbers (edit)
 ←  12 13 14  → 
    Cardinal: trinaest
    Ordinal: trinaesti
    Multiplier: trinaestostruk
    Collective: trinaestoro, trinaestorica
    Fractional: trinaestina

Etymology

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From trȋ (three) +‎ na (on) +‎ dȅset (ten). Cognates include Slovene trinájst.

Numeral

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trínaest (Cyrillic spelling три́наест)

  1. thirteen

Usage notes

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This number is indeclinable. It governs the genitive plural of the noun.