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Intermediate Dictionary      
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convex
tautology

con·vex

convex

 
 
pronunciation:
kan veks [or] kan veks
part of speech: adjective
definition: having a surface or edge that curves outward like the outside of a ball.
The convex lens helps me see small objects.
synonyms:
bulging
antonyms:
concave
similar words:
arched, round
derivation: convexly (adv.)