Also found in: Dictionary, Thesaurus, Medical, Legal, Idioms, Wikipedia.


1. Pathol the spread of cancer from its point of origin into surrounding tissues
2. Ecology the movement of plants to a new area or to an area to which they are not native
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(infestation), the infection of man, animals, and plants by animal parasites.

Invasion may be active, as when a parasite attacks or penetrates the body of the host through injured or intact skin, or passive, brought into the body with water or food.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


The movement of one material into a porous reservoir area that has been occupied by another material.
The phase of an infectious disease during which the pathogen multiplies and is distributed; precedes signs and symptoms.
The process by which microorganisms enter the body.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
It has been reported that MNE was comparable with MCE in estimating the invasion depth of early colorectal cancer, but there was greater interobserver variability using MNE [28].
The home invasion, which occurred Friday, came as a shock to the Millburn Police Department because of the viciousness of the attack.
He next looks at redeployment of Japanese forces to deal with the expected invasion, followed by a chapter on the planned buildup of U.S.
Saddam's invasion of Kuwait led to the 1991 Gulf War, when U.S.-led forces drove Iraqi troops fromKuwait but left Saddam in power for another 12 years.
Before invasion Iraqis had just one 'bad-man', Saddam Hussein but now, each Iraqi has dozens of 'bad-men' surrounding him out for his blood with no mercy.
Ripface Invasion developed a new sound for new and old generations to hear with their thrash punk/hardcore crossover style.
Lavin was charged with home invasion, armed robbery while masked, use of a firearm in the commission of a felony, impersonating a police officer, carrying a firearm without a license, ammunition possession without a firearm identification card and marijuana possession with intent to distribute.
Air-raid sirens sounded at 5.30am local time when the Turkish invasion was launched and Turkish troops landed on the island`s northern shores.
In the build-up to the Allied invasion, code names and acronyms were vital to help maintain the blanket of secrecy around the operation.
The court concluded that Liberty's Private Advantage policy's broad exclusion barring coverage for claims "arising out of" an actual or alleged invasion of privacy precluded coverage for iCan entirely.
Accurate staging of cervical carcinoma is essential for patient selection and planning management.6 The most important factor in staging cervical cancer and treatment planning is presence or absence of parametrial invasion which can significantly affect surgical outcome.7,8
The study is considered to be the first estimate of global shipping traffic change over time, and the consequences it could have on biological invasions. Other work in invasion ecology has modelled shipping traffic as constant, despite all historical evidence being to the contrary.