1425-75 for obsolete adj. sense “bound together”; 1535-45for def 1; < Latincolligātus (past participle of colligāre), equivalent to col-col-1 + ligā- (stem of ligāre to bind) + -tus past participle ending
1540s, from Latin colligatus, past participle of colligare "to bind together," from com- "together" (see com-) + ligare "to bind" (see ligament). As a concept in logic, from 1837; in linguistics, from 1953. Related: Colligation.