ῥομβοειδής
From LSJ
Μή, φίλα ψυχά, βίον ἀθάνατον σπεῦδε, τὰν δ' ἔμπρακτον ἄντλει μαχανάν → Oh! my soul do not aspire to eternal life, but exhaust the limits of the possible
English (LSJ)
ές,
A rhombus-shaped, rhomboidal, Hp.Art.35, Str.2.1.22, etc.; ῥ. σχῆμα rhomboid, i.e. a four-sided figure with only the opposite sides and angles equal, Euc.1 Def.22, Ph.Bel.52.30, Ptol. Alm.7.5, cf. Hegesand.37; τὸ ῥ. στερεόν (v. ῥόμβος B.1 b) Simp.in Cael.410.5:—τὸ ῥ., a place at Megara, Plu.Thes.27.