Enema entered the English language c. 1675 from Latin in which, in the 15th century, it was first used in the sense of a rectal injection, from Greek ἔνεμα (énema), "injection", itself from ἐνιέναι (enienai) "to send in, inject", from ἐν (en), "in" + ἱέναι (hienai), "to send, throw".
Enema entered the English language c. 1675 from Latin in which, in the 15th century, it was first used in the sense of a rectal injection, from Greek ἔνεμα (énema), "injection", itself from ἐνιέναι (enien.ai) "to send in, inject", from ἐν (en), "in" + ἱέναι (hienai), "to send, throw"