Where does “pseudopterygium” come from?

pseudopterygium (English) comes from English pseudo, from English pseudo-, from Ancient Greek ψευδής, from Ancient Greek -ής, from Proto-Indo-European -ēs, from Proto-Indo-European -ess, from Proto-Indo-European -os — Creates action nouns or result nouns from verbs;...

pseudopterygium (English): A pterygium formed by damage to the eye or by disease

Definitions

  1. A pterygium formed by damage to the eye or by disease

Ancestry of “pseudopterygium”, step by step

pseudopterygium traces back through two separate lines of ancestry.

via English pseudo

StepLanguageWordMeaning
1EnglishpseudoAn intellectually pretentious person; a...
2Englishpseudo-False, not genuine, fake
3Ancient Greekψευδήςlying, false, untrue; deceived, beguiled
4Ancient Greek-ήςadjective suffix
5Proto-Indo-European-ēsPrimarily forms adjectival bahuvrīhi compounds
6Proto-Indo-European-ess
7Proto-Indo-European-osCreates action nouns or result nouns from verbs;...

via English pterygium

StepLanguageWordMeaning
1EnglishpterygiumAn abnormal mass of tissue in the corner of the...
2Ancient Greekπτερύγιονwing, fin
3Ancient Greekπτέρυξwing; feathers; fins
4Ancient Greekπτερόνfeather; wing; Any winged creature
5Proto-Indo-Europeanpéth₂r̥wing; feather
6Proto-Indo-Europeanpeth₂-to spread out; to fly
Every word from Proto-Indo-European -osEvery word from Ancient Greek -ήςEvery word from English pseudo-