concavo-concave

from WordNet (r) 3.0 (2006)
concavo-concave
    adj 1: concave on both sides [syn: {biconcave}, {concavo-
           concave}]
from The Collaborative International Dictionary of English v.0.48
Concavo-concave \Con*ca`vo-con"cave\, a.
   Concave or hollow on both sides; double concave.
   [1913 Webster]
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