单词 | convex |
释义 | con·vex ![]() adj. Having a surface or boundary that curves or bulges outward, as the exterior of a sphere. [Latin convexus; see wegh- in the Appendix of Indo-European roots.] convex′ly adv. ![]() left to right: biconvex, plano-convex, and convexo-concave lenses |
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