'Plano-concave' definitions:
Definition of '
Plano-concave
'
From:
GCIDE
Plano-concave \Pla"no-con"cave\, a. [Plano- + concave.] Plane or flat on one side, and concave on the other; as, a plano-concave lens. See
Lens
. [1913 Webster]
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