Where does “pennate” come from?

pennate (English) comes 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.

pennate (English): Having a feather-like shape; A penniform muscle

Definitions

  1. Having a feather-like shape; A penniform muscle

Ancestry of “pennate”, step by step

StepLanguageWordMeaning
1Latinpennatuswinged
2Latinpennawing; feather, especially a flight-feather;...
3Proto-Italicpetnāfeather; wing
4Proto-Indo-Europeanpéth₂r̥wing; feather
5Proto-Indo-Europeanpeth₂-to spread out; to fly

Words derived from “pennate”

Every word from Proto-Indo-European peth₂- →Every word from Proto-Indo-European péth₂r̥ →Every word from Proto-Italic petnā →
pennate — Etymology, Origin & Word History | Etymology Explorer