P3L1A1N1O1C3O1N1V4E1X8
25 points
PLANOCONVEX is validvalid
with one surface plane and the other convex [adj]
of a lens, part of an animal or plant, etc.: having one surface plane and the opposite one convex [adj]
with one surface plane and the other convex [adj]
of a lens, part of an animal or plant, etc.: having one surface plane and the opposite one convex [adj]