synonymy

syn·on·y·my  (s-nn-m)

n. pl. syn·on·y·mies

1. The quality of being synonymous; equivalence of meaning.

2. Study and classification of synonyms.

3. A list, book, or system of synonyms.

4. Biology A chronological list or record of the scientific names that have been applied to a species and its subdivisions.

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Synonymy synonyms collectively, 1683.

Thesaurus

Noun

1.

synonymy - the semantic relation that holds between two words that can (in a given context) express the same meaning synonymity, synonymousness semantic relation - a relation between meanings