biconvexity

biconvex

bi·con·vex

B0232200 (bī′kŏn-vĕks′, bī-kŏn′vĕks′)adj. Convex on both sides or surfaces: a biconvex disk.

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bi′con·vex′i·ty (-vĕk′sĭ-tē) n.

biconvexity

(ˌbaɪkənˈvɛksɪtɪ) nthe characteristic of having two convex surfaces