distributive

Concise Oxford English Dictionary © 2008 Oxford University Press:
distributive /dɪˈstrɪbjʊtɪv/

▶adjective

• 1 relating to distribution or to things that are distributed.

• 2 Grammar (of a determiner or pronoun) referring to each individual of a class, not to the class collectively, e.g. each, either.

• 3 Mathematics involving the condition that an operation performed on two or more quantities already combined by another operation gives the same result as when it is performed on each quantity individually and the products then combined, e.g. a × (b + c) = ab + ac.

– derivatives
distributively adverb.