English

aerophilately

From aero- + philately.

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-

French philatélie

Today it means

noun The study or collection of airmail stamps, cancellations, etc.

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

Etymograph / aerophilately