ὕπτιος ὕπτιος, α, ον from ὑπό, as Lat. supinus from sub laid back, laid on oneʼs back, πέσεν ὕπτιος he fell backwards, opp. to πρηνής, Il.; of a quadruped, ὀρθοῦ ἑστεῶτος καὶ ὑπτίου rearing upright and falling backwards, Hdt. generally with the under side uppermost, χείρ ὑπτία the hollow of the hand, Plut.; ἐξ ὑπτίου κράνους from the upturned helmet, with the hollow uppermost, Aesch.; so, παράθες ὑπτίαν (τὴν ἀσπίδα) Ar.; ἀψὶς ὑπτία a half-wheel with the concave side uppermost, Hdt.; ὑπτίοις σέλμασιν ναυτίλλεται he sails with the bottom uppermost, i. e. suffers shipwreck, Soph.; ἐξ ὑπτίας νεῖν to swim on the back (in metaph. sense), Plat. of land, sloping evenly, of Egypt, Hdt.