The definition of a sortie is a mission by a military plane, or a raid made while being surrounded by an enemy.(noun)
See sortie in Webster's New World College Dictionary
Origin: Fr < sortir, to issue, go out < VL *sortire, prob. < L sortitus, chosen, selected by lot, pp. of sortiri < sors: see sort
See sortie in American Heritage Dictionary 4
Origin: , from feminine past participle of sortir, to go out
Origin: , from Old French.
Learn more about sortie