plano-convex

[ pley-noh-kon-veks, -kon-veks, -kuh n- ]

/ ˌpleɪ noʊˈkɒn vɛks, -kɒnˈvɛks, -kən- /

pertaining to or noting a lens that is plane on one side and convex on the other.

Origin of plano-convex

First recorded in 1655–65; plano-¹ + convex

In most plano-convex examples, the plane face is unmodified except for retouch.

Handbook of Alabama Archaeology: Part I Point Types |James W. Cambron
The holochroal eyes are of two kinds, one with plano-convex and one with biconvex lenses.

The Appendages, Anatomy, and Relationships of Trilobites |Percy Edward Raymond
The two examples with plano-convex cross-sections were unmodified on the plano face except for retouch along the edges.

Handbook of Alabama Archaeology: Part I Point Types |James W. Cambron
Seeds anatropous, mucilaginous, flattened, containing a large embryo with plano-convex cotyledons.

The Manual of the Botany of the Northern United States |Asa Gray

The ordinary pattern consists of two plano-convex lenses mounted as shown in section at Fig. 5.

The Barnet Book of Photography |Various

plano-convex

/ (ˌpleɪnəʊˈkɒnvɛks) /

(of a lens) having one side convex and the other side plane