Grammar. of or relating to an adjective or noun that is directly adjacent to, in English usually preceding, the noun it modifies, without any intervening linking verb, as the adjective sunny in a sunny day or the noun television in a television screen.
Grammar. an attributive word, especially an adjective.
British Dictionary definitions for attributiveness
relating to an attribute
(grammar) (of an adjective or adjectival phrase) modifying a noun and constituting part of the same noun phrase, in English normally preceding the noun, as black in Fido is a black dog (as opposed to Fido is black) Compare predicative
(philosophy) relative to an understood domain, as small in that elephant is small