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Webster 1913 Edition
Concavo-convex
Con-caˊvo-con′vex
,Adj.
1.
Concave on one side and convex on the other, as an eggshell or a crescent.
2.
(Optics)
Specifically, having such a combination of concave and convex sides as makes the focal axis the shortest line between them. See Illust. under
– Lens
. Con-ca′vous-ly
, adv.
Webster 1828 Edition
Concavo-convex
CONCAVO-CONVEX
,Adj.