Meaning of plano-concave

pla•no-con•cave

Pronunciation: (plā"nō-kon'kāv, -kon-kāv'), [key]
— adj. Optics.
  1. pertaining to or noting a lens that is plane on one side and concave on the other. See diag. under
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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