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Webster 1913 Edition

Adj.

Having power to denote; designating or marking off.

Proper names are preëminently

denotative

; telling us that such as object has such a term to denote it, but telling us nothing as to any single attribute.

Latham.

Adj.

Having power to denote.

denotative ‎(comparative more denotative, superlative most denotative)

That denotes or names; designative.
- 1989, Oliver Sacks, Seeing Voices: A Journey into the World of the Deaf
  There was still no concept of language (arithmetical symbolism, perhaps, is not a language, is not denotative in the same sense as words).
Specific to the primary meaning of a term.

that denotes or names

denotative