Pentavalent

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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]



From WordNet (r) 2.0 [wn]:

  pentavalent
       adj : having a valence of five