Main Entry:

in·clu·sion

Pronunciation:

\in-ˈklü-zhən\

Function:

noun

Etymology:

Latin inclusion-, inclusio, from includere

Date:

1600

1: the act of including : the state of being included2: something that is included: as a: a gaseous, liquid, or solid foreign body enclosed in a mass (as of a mineral) b: a passive usually temporary product of cell activity (as a starch grain) within the cytoplasm or nucleus3: a relation between two classes that exists when all members of the first are also members of the second — compare membership 3 4: the act or practice of including students with disabilities in regular school classes

— in·clu·sion·ary \in-ˈklü-zhə-ner-ē\ adjective