Search Result for "biconcave": 
Wordnet 3.0

ADJECTIVE (1)

1. concave on both sides;
[syn: biconcave, concavo-concave]



The Collaborative International Dictionary of English v.0.48:

Biconcave \Bi*con"cave\, a. [Pref. bi- + concave.]
   Concave on both sides; as, biconcave vertebr[ae].
   [1913 Webster]


WordNet (r) 3.0 (2006):

biconcave
    adj 1: concave on both sides [syn: biconcave, concavo-
           concave]