The Collaborative International Dictionary of English v.0.48:

Denotative \De*not"a*tive\, a.
   Having power to denote; designating or marking off.
   [1913 Webster]

         Proper names are pre["e]minently denotative; telling us
         that such as object has such a term to denote it, but
         telling us nothing as to any single attribute.
                                                  --Latham.
   [1913 Webster]

WordNet (r) 3.0 (2006):

denotative
    adj 1: having the power of explicitly denoting or designating or
           naming [syn: denotative, denotive] [ant:
           connotative]
    2: in accordance with fact or the primary meaning of a term
       [syn: denotative, explicit]