Entry 1 sense Webster, 1913 Demobilize /dĭm-ōb'-əl-īzˌ/ · De·mob·i·lize · IPA /diːˈməʊbɪlaɪz/ 01 v. t. To disorganize, or disband and send home, as troops which have been mobilized. 1. To disorganize, or disband and send home, as troops which have been mobilized.(Mil.)