- pertaining to or noting a lens that is plane on one side and concave on the other.
Origin of plano-concave
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- (of a lens) having one side concave and the other side plane
- Flat on one side and concave on the other.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.