Search Result for "planoconcave": 
Wordnet 3.0

ADJECTIVE (1)

1. flat on one side and concave on the other; 



The Collaborative International Dictionary of English v.0.48:

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


WordNet (r) 3.0 (2006):

planoconcave
    adj 1: flat on one side and concave on the other