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plano-concave

[pley-noh-kon-keyv, -kon-keyv] /ˌpleɪ noʊˈkɒn keɪv, -kɒnˈkeɪv/
adjective, Optics.
1.
pertaining to or noting a lens that is plane on one side and concave on the other.
Origin
1685-1695
1685-95; plano-1 + concave
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for plano concave

plano-concave

/ˌpleɪnəʊˈkɒnkeɪv/
adjective
1.
(of a lens) having one side concave and the other side plane
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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