concave : Idioms & Phrases

Index

concave lens

  • noun a lens such that a parallel beam of light passing through it is caused to diverge or spread out
    diverging lens.
WordNet

concave polygon

  • noun a polygon such that there is a straight line that cuts it in four or more points
WordNet

concave polyhedron

  • noun a polyhedron some of whose plane sections are concave polygons
WordNet

concave shape

  • noun a shape that curves or bends inward
    concavity; incurvature; incurvation.
WordNet

concavo-concave

  • adjective satellite concave on both sides
    biconcave.
WordNet
Con*ca`vo-con"cave adjective
Definitions
  1. Concave or hollow on both sides; double concave.
Webster 1913

convexo-concave

  • adjective satellite convex on one side and concave on the other with the convexity being greater than the concavity
WordNet
Con*vex"o-con"cave adjective
Definitions
  1. Convex on one side, and concave on the other. The curves of the convex and concave sides may be alike or may be different. See Meniscus.
Webster 1913

plano-concave

Pla"no-con"cave adjective
Etymology
Plano- + concave.
Definitions
  1. Plane or flat on one side, and concave on the other; as, a plano-concave lens. See Lens.
Webster 1913