con·vex
adjective/ˈkɒnveks/
/ˈkɑːnveks/
- (of an outline or a surface) curving out
enlarge image凸出的；凸面的 - a convex lens/mirror
凸透镜；凸面镜 - The surface is slightly convex.
表面略微凸出。
Extra ExamplesTopics Colours and Shapesc2- A convex lens is thicker at its centre than at its edges.
凸透镜的中心比边缘厚。 - A reflection in a convex mirror is smaller than the same reflection in a flat mirror.
凸面镜中的反射小于平面镜中的相同反射。
Oxford Collocations DictionaryConvex is used with these nouns:- mirror
Word Originlate 16th cent.: from Latin convexus ‘vaulted, arched’. - a convex lens/mirror