Where does “tripennate” come from?

tripennate (English) comes from English pennate, from Latin pennatus, from Latin penna, from Proto-Italic petnā, from Proto-Indo-European péth₂r̥, from Proto-Indo-European peth₂- — to spread out; to fly.

tripennate (English): Alternative form of tripinnate

Definitions

  1. Alternative form of tripinnate

Ancestry of “tripennate”, step by step

tripennate traces back through two separate lines of ancestry.

via English pennate

StepLanguageWordMeaning
1EnglishpennateHaving a feather-like shape; A penniform muscle
2Latinpennatuswinged
3Latinpennawing; feather, especially a flight-feather;...
4Proto-Italicpetnāfeather; wing
5Proto-Indo-Europeanpéth₂r̥wing; feather
6Proto-Indo-Europeanpeth₂-to spread out; to fly

via English tri

StepLanguageWordMeaning
1Englishtritriathlon; triangle
2Proto-Indo-Europeantréyesthree
Every word from Proto-Indo-European peth₂- →Every word from Proto-Indo-European péth₂r̥ →Every word from Proto-Italic petnā →