ატმოსფერო (atmosp'ero)=atmosphere=ατμόσφαιρα

ატმოსფერო (atmosp'ero)=atmosphere=ατμόσφαιρα

WIKTIONARY: Etymology

From New Latin atmosphaera, from Ancient Greek ἀτμός (atmós, “steam”) + Ancient Greek σφαῖρα (sphaĩra, “sphere”).