凸	570C00   40.40	部居	畫數  5	ㄊㄨˊ [tu2]  (*ㄍㄨˇ [gu3] , *ㄉㄧㄝˊ [die2] ).
V	(*[gu3]) To bulge, protrude: 凸出來 (of eye, belly, forehead) bulge, protrude; 凸嘴凹鼻 protruding lips and snub nose.
Adj	([tu2]) Convex, opp. of 凹 concave: 凸凹不平 rough, uneven in surface; 凸凹的 ditto; 凸紋，凸花 raised carving or design.
Words	1.凸版 [tu2ban3], n., positive plate engraving.  2.凸出 [gu3chu1], adj., bulging out.  3.凸鏡 [tu2jing4], n., convex mirror.  4.凸透鏡 [tu2tou4jing4], n., convex lens.