monovalent

from WordNet (r) 3.0 (2006)

monovalent
    adj 1: containing only one kind of antibody [ant: {polyvalent}]
    2: having a valence of 1 [syn: {monovalent}, {univalent}] [ant:
       {multivalent}, {polyvalent}]

from The Collaborative International Dictionary of English v.0.48

Monovalent \Mo*nov"a*lent\, a. [Mono- + L. valens, p. pr. See
   {Valence}.] (Chem.)
   Having a valence of one; univalent. See {Univalent}.
   [1913 Webster]

[email protected]