Where does “trideka” come from?

trideka (Esperanto) comes from Esperanto tridek, from Esperanto tri, from English three, from Middle English thre, from Old English þrī, from Proto-West Germanic þrīʀ, from Proto-Germanic þrīz, from Proto-Indo-European *tréyes.

trideka (Esperanto): thirtieth

Definitions

  1. thirtieth

Ancestry of “trideka”, step by step

StepLanguageWordMeaning
1Esperantotridekthirty
2Esperantotrithree
3EnglishthreeA numerical value after two and before four....
4Middle Englishthrethree
5Old Englishþrīthree
6Proto-West Germanicþrīʀthree
7Proto-Germanicþrīzthree
8Proto-Indo-European*tréyes—
Every word from Proto-Indo-European *tréyes →Every word from Proto-Germanic þrīz →Every word from Proto-West Germanic þrīʀ →