-mē, -mi noun
( -es )
Etymology: synonym + -y
1.
a. : the study or discrimination of synonyms or of words which may be confused in meaning
b. : a list or collection of synonyms or words of similar meaning often defined and discriminated from each other
2. : the scientific names that have been used in different publications to designate a species or other taxonomic group ; also : a list of these names specifying by date the books and authors employing them
3.
[Late Latin synonymia synonym, synonymousness, from Greek synōnymia synonym, from synōnymos synonymous + -ia -y]
: the quality or fact of being synonymous : synonymousness , synonymity