Where does “subtendere” come from?

subtendere (Latin) comes from Latin sub, from Proto-Italic supo, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

Ancestry of “subtendere”, step by step

subtendere traces back through two separate lines of ancestry.

via Latin sub

StepLanguageWordMeaning
1Latinsubunder, beneath; behind; at the feet of
2Proto-Italicsupounder
3Proto-Indo-Europeanupóunder, below
4Proto-Indo-Europeanh₃ewp-

via Latin tendere

StepLanguageWordMeaning
1Latintenderesecond-person singular future passive indicative...
2Proto-Indo-Europeantend-to stretch, to extend; to split, cut off
3Proto-Indo-Europeantemh₂-to stretch, string; to cut

Words derived from “subtendere

Every word from Proto-Indo-European h₃ewp-Every word from Proto-Indo-European upóEvery word from Proto-Italic supo
subtendere — Etymology, Origin & Word History | Etymology Explorer