plural of cancelment

(dated) cancellation

A hawk's turning motion in midair, often to make a second stoop toward missed prey.

plural of canceleer

(philately) A cancellation mark that is so heavy that it defaces the postage stamp to which it is applied, devaluing it from a collector's point of view.

(philately) Synonym of mute cancel

plural of killer cancel

(transitive) To neutralize the effect of. / (intransitive) Of two or more things: to neutralize each other's effect.

(philately) A postal cancellation that does not state any location or date, used in wartime to prevent the enemy gathering information about troop movements from captured mail.

(sound, headphones) the active cancellation of outside noise by creation of an inverse waveform to null out noise soundwaves within the subject environment