equative

adjective

1. belonging to or noting a degree of comparison of adjectives or adverbs that indicates an equality of the quality, quantity, etc., expressed by the adjective or adverb.
2. noting a use of the verb be that equates one term with another in a sentence.
3. noting or pertaining to a case indicating likeness or identity.

noun

4. the equative degree of comparison.
5. the equative case, or a form in this case.