English

aerocyst

From aero- + cyst.

Formed from aero- + cyst

Proto-Indo-European *h₂ews- ‘dawn’

Proto-Indo-European *h₂ewsér ‘in the direction of dawn, east’

Proto-Hellenic *auhḗr ‘morning mist’

Ancient Greek ἀήρ ‘air’

Ancient Greek ἀέρος

English aero-

Ancient Greek κύστις ‘anatomical sac’

Late Latin cystis

English cyst

Today it means

noun An air vesicle.

Language periods are conventional ranges, not dates for this word.

Etymograph / aerocyst