ἀνομοιογώνιος
From LSJ
κάλλιστον ἐφόδιον τῷ γήρᾳ ἡ παιδεία (Aristotle, quoted by Diogenes Laertius 5.21) → the finest provision for old age is education
English (LSJ)
ον, A with dissimilar angles, Papp.216.20.
Spanish (DGE)
-ον geom. que tiene ángulos desiguales Papp.316.20.