Nantoka/凸面tū miàn凸面 (tū miàn) is a Chinese word meaning “convex surface”.Meanings1convex surfaceCharacters in 凸面凸tū · to stick out; protruding; convex; male (connector etc)面miàn · faceRelated words里面inside里面variant of 裡面|里面[li3 mian4]外面outside (also pr. [wai4 mian5] for this sense)上面on top of后面the back; the rear; the last bit面face面flour面variant of 麵|面[mian4]下面below下面to boil noodles见面to meet; to see each other面前in front ofStudy Chinese with flashcards →