ἀμφίκυρτος
ἀμφί-κυρτος, ον,
A). convex on each side, like the moon in her second or third quarter, gibbous, Cael. 291b20 , Sign. 56 , . 2.381d
2). doubly convex, of a curvilinear angle, opp. ἀμφίκοιλος, in Euc.Def. 8p.127F., al.; γραμμαί ; 2.673 λεπίδες Bel. 70.23 .