convexo-convex

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Convex on both sides; biconvex. Used of a lens.

from The Century Dictionary.

• Convex on both sides, as a lens: otherwise termed doubleconvex.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Convex on both sides; double convex. See under convex, a.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective convex on both sides; shaped like a lentil