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[in-veyd] /ɪnˈveɪd/
verb (used with object), invaded, invading.
to enter forcefully as an enemy; go into with hostile intent:
Germany invaded Poland in 1939.
to enter like an enemy:
Locusts invaded the fields.
to enter as if to take possession:
to invade a neighbor's home.
to enter and affect injuriously or destructively, as disease:
viruses that invade the bloodstream.
to intrude upon:
to invade the privacy of a family.
to encroach or infringe upon:
to invade the rights of citizens.
to permeate:
The smell of baking invades the house.
to penetrate; spread into or over:
The population boom has caused city dwellers to invade the suburbs.
verb (used without object), invaded, invading.
to make an invasion:
troops awaiting the signal to invade.
1485-95; < Latin invādere, equivalent to in- in-2 + vādere to go; see wade
Related forms
invadable, adjective
invader, noun
quasi-invaded, adjective
reinvade, verb (used with object), reinvaded, reinvading.
uninvadable, adjective
uninvaded, adjective
1, 2. penetrate, attack. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for invading
  • The idea of a citizen army equipped with hunting rifles and hand guns repelling a modern invading army is laughable.
  • The only specie endangered by this wall is the hoard of illegal aliens invading our border at an ever increasing rate.
  • As an alternative, his team proposed that human cells might prevent the chimpanzee viruses from even invading.
  • We try to stop species from invading other habitats multiplying and ruining the ecosystem there.
  • The next step might be to develop a certification system to make it clear which species are at low risk of invading.
  • Placental mammals invading from the north later replaced the southern marsupial carnivores.
  • It can close its nostrils to keep dust and insects from invading its snout, and its thick skin protects it from bites.
  • Three brothers living near the edge of a forest witness the coming of an invading army.
  • Sometimes, it unleashes a potentially lethal overreaction to the invading microbe.
  • It was frenzied as adults and children ran, jumped and grabbed in an attempt to win one of the invading figures.
British Dictionary definitions for invading


to enter (a country, territory, etc) by military force
(transitive) to occupy in large numbers; overrun; infest
(transitive) to trespass or encroach upon (privacy, etc)
(transitive) to enter and spread throughout, esp harmfully; pervade
(of plants, esp weeds) to become established in (a place to which they are not native)
Derived Forms
invadable, adjective
invader, noun
Word Origin
C15: from Latin invādere, from vādere to go
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for invading



late 15c., from Middle French invader "to invade," and directly from Latin invadere "to go into, enter upon; assail, assault, attack" (see invasion). Related: invaded; invading.

Online Etymology Dictionary, © 2010 Douglas Harper
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