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mid-15c., verb use of adjective constitute, "made up, formed" (late 14c.), from Latin constitutus "arranged, settled," past participle adjective from constituere "to cause to stand, set up, fix, place, establish, set in order; form something new; resolve," of persons, "to appoint to an office," from com-, intensive prefix (see com-), + statuere "to set," from PIE root *sta- "to stand," with derivatives meaning "place or thing that is standing" (see stet). Related: Constituted; constituting.