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Definition of Invade
1. Verb. March aggressively into another's territory by military force for the purposes of conquest and occupation. "Hitler invaded Poland on September 1, 1939"
Generic synonyms: Assail, Attack
Specialized synonyms: Infest, Overrun
Derivative terms: Invader, Invasion, Invasive, Occupation, Occupier
2. Verb. To intrude upon, infringe, encroach on, violate. "The neighbors intrude on your privacy"
Generic synonyms: Come In, Enter, Get In, Get Into, Go In, Go Into, Move Into
Specialized synonyms: Foray Into, Raid
Derivative terms: Invader, Invasion, Invasive
3. Verb. Occupy in large numbers or live on a host. "The Kudzu plant infests much of the South and is spreading to the North"
Generic synonyms: Inhabit
Derivative terms: Infestation, Infestation, Invasion
4. Verb. Penetrate or assault, in a harmful or injurious way. "The cancer had invaded her lungs"
Definition of Invade
1. v. t. To go into or upon; to pass within the confines of; to enter; -- used of forcible or rude ingress.
2. v. i. To make an invasion.
Definition of Invade
1. Verb. (transitive) To move into. ¹
2. Verb. (transitive) To enter by force in order to conquer. ¹
3. Verb. (transitive) To infest or overrun. ¹
¹ Source: wiktionary.com
Definition of Invade
1. to enter for conquest or plunder [v -VADED, -VADING, -VADES]
Medical Definition of Invade
1. 1. To go into or upon; to pass within the confines of; to enter; used of forcible or rude ingress. "Which becomes a body, and doth then invade The state of life, out of the grisly shade." (Spenser) 2. To enter with hostile intentions; to enter with a view to conquest or plunder; to make an irruption into; to attack; as, the Romans invaded Great Britain. "Such an enemy Is risen to invade us." (Milton) 3. To attack; to infringe; to encroach on; to violate; as, the king invaded the rights of the people. 4. To grow or spread over; to affect injuriously and progressively; as, gangrene invades healthy tissue. Synonym: To attack, assail, encroach upon. See Attack. Origin: L. Invadere, invasum; pref. In- in + vadere to go, akin to E. Wade: cf. OF. Invader, F. Envahir. See Wade. Source: Websters Dictionary (01 Mar 1998)