Where does “Actinopterygii” come from?

Actinopterygii (Translingual) comes from Ancient Greek πτέρυξ, from Ancient Greek πτερόν, from Proto-Indo-European péth₂r̥, from Proto-Indo-European peth₂- — to spread out; to fly.

Actinopterygii (Translingual): The ray-finned fishes

Definitions

  1. The ray-finned fishes

Ancestry of “Actinopterygii”, step by step

StepLanguageWordMeaning
1Ancient Greekπτέρυξwing; feathers; fins
2Ancient Greekπτερόνfeather; wing; Any winged creature
3Proto-Indo-Europeanpéth₂r̥wing; feather
4Proto-Indo-Europeanpeth₂-to spread out; to fly

Words derived from “Actinopterygii”

Every word from Proto-Indo-European peth₂- →Every word from Proto-Indo-European péth₂r̥ →Every word from Ancient Greek πτερόν →