The Collaborative International Dictionary of English v.0.48:
Disarmament \Dis*arm"a*ment\, n. [Cf. F. d['e]sarmement.] The act of disarming. [1913 Webster]WordNet (r) 3.0 (2006):
disarmament n 1: act of reducing or depriving of arms; "the disarmament of the aggressor nations must be complete" [syn: disarming, disarmament] [ant: armament, arming, equipping]