Search Result for "pentavalent": 
Wordnet 3.0

ADJECTIVE (1)

1. having a valence of five; 



The Collaborative International Dictionary of English v.0.48:

Pentavalent \Pen*tav"a*lent\, a. [Penta- + L. valens, p. pr. See
   Valence.] (Chem.)
   Having a valence of five; -- said of certain atoms and
   radicals.
   [1913 Webster]


WordNet (r) 3.0 (2006):

pentavalent
    adj 1: having a valence of five