(ˈ)kō|ärkˌtāt, -_tə̇t adjective
Etymology: Latin coarctatus, past participle of coarctare, coartare to press together, contract, from co- + artare, from artus narrow, confined; akin to Latin artus joint — more at article
biology : pressed together : closely connected ; specifically : enclosed in a rigid case formed from the last larval skin — used of insect pupae