biconvex

[bahy-kon-veks, bahy-kon-veks]
adjective
convex on both sides, as a lens.

Origin:
1840–50; bi-1 + convex

biconvexity, noun
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World English Dictionary
biconvex (baɪˈkɒnvɛks, ˌbaɪkɒnˈvɛks)
 
adj
(of a lens) having convex faces on both sides; convexo-convex

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

biconvex bi·con·vex (bī'kŏn-věks', bī-kŏn'věks')
adj.
Convex on both sides or surfaces.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
biconvex   (bī'kŏn-věks')  Pronunciation Key 
Convex on both sides or surfaces.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
The points are moderately thick and biconvex in cross section.
These points are flattened to slightly biconvex in cross section and finely chipped.
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