A grammatical case in certain languages, including Ossetic, Finnish and Sumerian, that indicates something is like something else. English equivalents include he was the same age as her and he looks like him
{s} of or pertaining to an adjective or adverb that marks the identity of degree of comparison, being the adjective or adverb that marks the identity of degree of comparison
{i} equative degree, degree of comparison in a language that marks likeness or identity (Grammar), relation that is expressed by an adjective or adverb (Grammar); adjective or adverb that expresses the equative degree