- the act or process of infiltrating.
- the state of being infiltrated.
- something that infiltrates; an infiltrate.
- a method of attack in which small bodies of soldiers or individual soldiers penetrate the enemy's line at weak or unguarded points in order to assemble behind the enemy position and attack it from the rear, harass enemy rear-area installations, etc.
- a system of transporting troops or vehicles at extended and irregular intervals so as to avoid enemy observation or attack, especially from the air.
- Geology. the seepage of water into soil or rock.Compare percolation(def 3).
Origin of infiltration
Examples from the Web for infiltration
The military commission this week was to focus on the alleged FBI infiltration of one of the defense teams.Prosecutors Have No Idea When 9/11 Mastermind’s Trial Will Start
December 17, 2014
Infiltration, though, may well taint all main rebel factions.Is Al Qaeda Aiding Bashar Al-Assad?
February 18, 2014
Last year, he orchestrated the infiltration of a Florida immigration detention center.The Dream 9 Ripple Effect
Terry Greene Sterling
August 4, 2013
The Taliban leadership makes no secret that it has targeted the ALP for attack and for infiltration.Afghanistan’s Rape Crisis: Villagers Fear U.S.-Backed Militias
Sami Yousafzai, Ron Moreau
May 22, 2013
Under a recent amendment to Israel's infiltration law, asylum seekers can be jailed for years without trial.Israel Deports Refugees to Sudan Despite Threat to Their Lives
Emily L. Hauser
February 27, 2013
There was an infiltration of a western quality into all of these.The Frontier in American History
Frederick Jackson Turner
It has crept in as an infiltration, as one might call it, from the democratic system.The Cult of Incompetence
In a few cases the lungs showed some infiltration with blood.Barium, A Cause of the Loco-Weed Disease
Albert Cornelius Crawford
Hence, the infiltration of the country with the best the towns contain.The Blue-Grass Region of Kentucky
James Lane Allen
The liquid remains in it quite well, without any trace of infiltration.Bramble-bees and Others
J. Henri Fabre
Word Origin and History for infiltration
early 15c., "a knitting together," noun of action from infiltrate. In physics, from 1796. Figurative sense of "a passing into" (anything immaterial) is from 1840; military sense of "stealthy penetration of enemy lines" dates from 1930.
- The act or process of infiltrating.
- The state of being infiltrated.
- The gas, fluid, or dissolved matter that has entered a substance, cell, or tissue.