Real Dictionary

subsume
verb: If something is subsumed within a larger group or class, it is included within it, rather than being considered as something separate.

subsume in American English
to include within a larger class, group, order, etc.
transitive verb: to consider or include (an idea, term, proposition, etc.) as part of a more comprehensive one

subsume in British English
to incorporate (an idea, proposition, case, etc) under a comprehensive or inclusive classification or heading