Толковый словарь английского языка - inclusion

noun Etymology: Latin ~-, inclusio, from includere Date: 1600 the act of including ; the state of being included, something that is included: as, a gaseous, liquid, or solid foreign body enclosed in a mass (as of a mineral), a passive usually temporary product of cell activity (as a starch grain) within the cytoplasm or nucleus, a relation between two classes that exists when all members of the first are also members of the second, the act or practice of including students with disabilities in regular school classes, ~ary adjective