or sphero-; also sphaer- or sphaero- combining form Etymology: New Latin sphaer-, from Greek sphair-, sphairo-, from sphaira sphere sphere
SPHER-
Meaning of SPHER- in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012