τρίνευρος

From LSJ

ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm

Source

Greek Monolingual

-η, -ο, Ν
(για φύλλα φυτού) αυτός που έχει τρία νεύρα, τρεις νευρώσεις.
[ΕΤΥΜΟΛ. < τρι- + νευρος (< νεύρο), πρβλ. πολύνευρος].