Semi vs Hemi — “Semi” and “hemi” are respectively Latin and Greek prefixes meaning “half”. The word “circle” is of Latin origin, so semicircle gets the Latin prefix. The word “sphere” is of Greek origin, so hemisphere gets the Greek prefix.
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Semi vs Hemi — “Semi” and “hemi” are respectively Latin and Greek prefixes meaning “half”. The word “circle” is of Latin origin, so semicircle gets the Latin prefix. The word “sphere” is of Greek origin, so hemisphere gets the Greek prefix.