From Middle French insecte
, from Latin insectum
(“with a notched or divided body, cut up”), from perfect passive partciple of insecō
(“I cut up”), from in-
(“I cut”), from the notion that the insect's body is "cut into" three sections. Calque of Ancient Greek ἔντομον
(entomon, “insect”), from ἔντομος
(entomos, “cut into pieces”).