concavo-convex lens
n.
A lens that is concave on one surface and convex on the opposite surface.
Words nearby concavo-convex lens
concave lens,
concavity,
concavo-concave,
concavo-concave lens,
concavo-convex,
concavo-convex lens,
conceal,
concealed carry,
concealed hemorrhage,
concealed-carry,
concealment