τὸ ἔντομον, -ου (ζῷον) – an insect (> ἔντομος = cut in pieces, ἐν + τέμνειν)
τὸ ὄνομα „ἔντομον“ (ἀπὸ τοῦ „ἐν“ καὶ „τέμνειν“) εὑρίσκεται οἱμοίως καὶ ἐν τῇ ῥωμαϊκῇ γλώσσῃ („in-sectum“ < „in“ + „secare“) καὶ ἐν πολλαῖς τῶν νῦν γλωττῶν· ὁ δὲ Ἀριστοτέλης πρῶτος ἦν ὃς ταῦτα τὰ ζῷα οὕτως ὠνόμασε·
“καλῶ δὲ ἔντομα ὅσα ἔχει κατὰ τὸ σῶμα ἐντομάς”
The name “insect/entomon” (from “in” and “to cut”) can be fund likewise in Latin and in many modern languages. Aristotle was the first who called these animals like this:
“I call ‘insects’ all those (animals) which have incisions/sections along their body” (Aristotle, Historia Animalium 487a33)