Adjacent Words

Invasion definitions

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Webster's 1828 Dictionary

INVA'SION, n. s as z. [L. invasio, from invado. See Invade.]
1. A hostile entrance into the possessions of another; particularly, the entrance of a hostile army into a country for the purpose of conquest or plunder, or the attack of a military force. The north of England and south of Scotland were for centuries subject to invasion, each from the other. The invasion of England by William the Norman, was in 1066.
2. An attack on the rights of another; infringement or violation.
3. Attack of a disease; as the invasion of the plague, in Egypt.

WordNet (r) 3.0 (2005)

n
1: the act of invading; the act of an army that invades for conquest or plunder
2: any entry into an area not previously occupied; "an invasion of tourists"; "an invasion of locusts" [syn: invasion, encroachment, intrusion]
3: (pathology) the spread of pathogenic microorganisms or malignant cells to new sites in the body; "the tumor's invasion of surrounding structures"

Merriam Webster's

noun Etymology: Middle English invasioune, from Anglo-French invasion, from Late Latin invasion-, invasio, from Latin invadere to invade Date: 15th century 1. an act of invading; especially incursion of an army for conquest or plunder 2. the incoming or spread of something usually hurtful

Oxford Reference Dictionary

n. 1 the act of invading or process of being invaded. 2 an entry of a hostile army into a country. Derivatives: invasive adj. Etymology: F invasion or LL invasio (as INVADE)

Webster's 1913 Dictionary

Invasion In*va"sion, n. [L. invasio: cf. F. invasion. See Invade.] 1. The act of invading; the act of encroaching upon the rights or possessions of another; encroachment; trespass. 2. A warlike or hostile entrance into the possessions or domains of another; the incursion of an army for conquest or plunder. 3. The incoming or first attack of anything hurtful or pernicious; as, the invasion of a disease. Syn: Invasion, Irruption, Inroad. Usage: Invasion is the generic term, denoting a forcible entrance into a foreign country. Incursion signifies a hasty and sudden invasion. Irruption denotes particularly violent invasion. Inroad is entry by some unusual way involving trespass and injury.

Collin's Cobuild Dictionary

(invasions) Frequency: The word is one of the 3000 most common words in English. 1. If there is an invasion of a country, a foreign army enters it by force. ...seven years after the Roman invasion of Britain... N-VAR: usu with supp, oft adj N, N of n 2. If you refer to the arrival of a large number of people or things as an invasion, you are emphasizing that they are unpleasant or difficult to deal with. ...this year's annual invasion of flies, wasps and ants... N-VAR: oft N of n 3. If you describe an action as an invasion, you disapprove of it because it affects someone or something in a way that is not wanted. Is reading a child's diary always a gross invasion of privacy? N-VAR: usu N of n [disapproval]

Soule's Dictionary of English Synonyms

n. 1. Attack, assault, aggression, incursion, irruption, inroad, foray, raid. 2. Encroachment, infringement, violation. 3. Invading. See the verb.

Moby Thesaurus

adoption, aggression, air attack, air raid, air strike, appropriation, arrogation, assault, assumption, attack, blitzkrieg, boarding, breach, drive, encroachment, entrance, entrenchment, escalade, fire raid, foray, impingement, imposition, incursion, infestation, infiltration, influx, infraction, infringement, injection, inroad, insinuation, interference, interjection, interloping, interposition, interposure, interruption, intervention, intrusion, irruption, lousiness, obtrusion, offense, offensive, onslaught, overrunning, overspreading, overswarming, plague, playing God, raid, ravage, razzia, saturation raid, scaling, seizure, shuttle raid, storming, swarm, swarming, teeming, transgression, trespass, trespassing, unlawful entry, usurpation, violation