Definition of invader noun from the Oxford Advanced Learner's Dictionary

 

invader

 noun
noun
BrE BrE//ɪnˈveɪdə(r)//
 
; NAmE NAmE//ɪnˈveɪdər//
 
 
jump to other results
an army or a country that enters another country by force in order to take control of it; a soldier fighting in such an army a foreign invader They prepared to repel the invaders. (figurative) The white blood cells attack cells infected with an invader.
See the Oxford Advanced American Dictionary entry: invader