planoconvex

from WordNet (r) 3.0 (2006)

planoconvex
    adj 1: flat on one side and convex on the other

from The Collaborative International Dictionary of English v.0.48

Plano-convex \Pla"no-con"vex\, a. [Plano- + convex.]
   Plane or flat on one side, and convex on the other; as, a
   plano-convex lens. See {Convex}, and {Lens}.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

bulging \bulging\ adj.
   1. curving or bulging outward. Opposite of {concave}.
      [Narrower terms: {biconvex, convexo-convex, lenticular,
      lentiform}; {broken-backed, hogged}; {convexo-concave};
      {gibbous, gibbose}; {planoconvex}] Also See: {protrusive}.

   Syn: convex.
        [WordNet 1.5]

   2. curving outward.

   Syn: bellied, bellying, bulbous, bulgy, protuberant.
        [WordNet 1.5]