Definition of Invasion

1. Noun. The act of invading; the act of an army that invades for conquest or plunder.

Generic synonyms: Incursion, Penetration
Specialized synonyms: Inroad
Derivative terms: Invade

2. Noun. Any entry into an area not previously occupied. "An invasion of locusts"
Exact synonyms: Encroachment, Intrusion
Generic synonyms: Entering, Entrance
Derivative terms: Encroach, Invade, Invade

3. Noun. (pathology) the spread of pathogenic microorganisms or malignant cells to new sites in the body. "The tumor's invasion of surrounding structures"
Category relationships: Medical Specialty, Medicine
Generic synonyms: Spread, Spreading
Derivative terms: Invade

Definition of Invasion

1. n. The act of invading; the act of encroaching upon the rights or possessions of another; encroachment; trespass.

Definition of Invasion

1. Noun. A military action consisting of armed forces of one geopolitical entity entering territory controlled by another such entity, generally with the objective of conquering territory or altering the established government. ¹

2. Noun. (figuratively) the entry of a large group into a new area. ¹

¹ Source: wiktionary.com

Definition of Invasion

1. the act of invading [n -S] : INVASIVE [adj]

Medical Definition of Invasion

1. A term that should be used with caution, although most cell biologists would follow Abercrombie in meaning the movement of one cell type into a territory normally occupied by a different cell type, some pathologists might not agree. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Lexicographical Neighbors of Invasion

invariances
invariant
invariant chain
invariant noun
invariant nouns
invariant section
invariant sections
invariant surface glycoprotein 100
invariantly
invariants
invars
invasibility
invasible
invasin
invasins
invasion (current term)
invasion index
invasion of Iwo
invasion of privacy
invasion stripes
invasional
invasionary
invasionist
invasionists
invasions
invasive
invasive cancer
invasive carcinoma
invasive cervical cancer
invasive exotic

Literary usage of Invasion

Below you will find example usage of this term as found in modern and/or classical literature:

1. The History of the Decline and Fall of the Roman Empire by Edward Gibbon (1826)
"The Tiro Sieges of Constantinople by the Arabs—Their invasion of France, ... 289 721 invasion of France by the Arabs 291 731 Expedition and Victories of Ab- ..."

2. Southern History of the War by Edward Alfred Pollard (1866)
"Three projects of invasion.—EARLY'S invasion OF MARYLAND, &c.—Sigel's retreat. ... MORGAN'S invasion OF KENTUCKY.—Ilia failure.—PRICE'S invasion OF ..."

3. Travels Into Several Remote Nations of the World by Jonathan Swift (1894)
"V The Author by an extraordinary Stratagem, prevents an invasion. ... I had not yet seen it, and upon this notice of an intended invasion, ..."

4. The Cambridge Modern History by John Emerich Edward Dalberg Acton Acton, Ernest Alfred Benians, Sir Adolphus William Ward, George Walter Prothero (1909)
"So soon as the news of the unexpected invasion of Saxony was known at Versailles, ... The second result of the invasion of Saxony was that it gave a fresh ..."

5. Biennial Report by California Dept. of Agriculture, California State Commission of Horticulture (1909)
"The first paper this afternoon is "The invasion of Noxious Weeds," by Professor Elmore Chase. THE invasion OF NOXIOUS WEEDS. BY PROFESSOR ELMORE CHASE. ..."

6. The History of Rome by Wilhelm Ihne (1871)
"BOOK The second invasion of the Gauls took place six years later, ... They fled under the cover of night.2 Alleged The third invasion of the Gauls took ..."

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