释义 
		[ in-fil-trey -shuh n ] SHOW IPA 
/ ˌɪn fɪlˈtreɪ ʃən / PHONETIC RESPELLING 
SEE SYNONYMS FOR infiltration  ON THESAURUS.COM
noun the act or process of infiltrating. 
the state of being infiltrated. 
something that infiltrates; an infiltrate. 
Military .  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  First recorded in 1790–1800; infiltrate + -ion
OTHER WORDS FROM infiltration re·in·fil·tra·tion,  noun Words nearby infiltration  infield hit, infield out, infighting, infill, infiltrate, infiltration , infiltration anesthesia, infiltration capacity, infiltration gallery, infiltrometer, infimum
Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Example sentences 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 | Tim Mak| December 17, 2014| DAILY BEAST
Last year, he orchestrated the infiltration  of a Florida immigration detention center.
The Dream 9 Ripple Effect | Terry Greene Sterling| August 4, 2013| DAILY BEAST
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| DAILY BEAST
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| DAILY BEAST
Laghman, situated on one of the main Taliban infiltration  routes to and from Pakistan, is a hotbed of insurgent activity.
Afghanistan: the Taliban’s War on Women | Sami Yousafzai| December 12, 2012| DAILY BEAST
The liquid remains in it quite well, without any trace of infiltration .
Bramble-bees and Others | J. Henri Fabre
The water supplied by infiltration  no doubt repairs the loss to a great degree.
The Atlantic Monthly, Vol. 12, No. 74, December, 1863 | Various
Although its progress is slow, the infiltration  of the bone is usually more extensive than appears externally.
Manual of Surgery | Alexis Thomson and Alexander Miles
The Beaker people were an excellent choice for infiltration .
The Time Traders | Andre Norton
In order to remedy the mischief of infiltration  it was resolved to remove and replace this projecting ledge.
Seeing Europe with Famous Authors, Volume 7 | Various
SEE MORE EXAMPLES SEE FEWER EXAMPLES   
Words related to infiltration raid, intrusion, inroad, attack, penetration, foray, aggression, violation, onslaught, offensive, infringement, assault, breach, incursion, travel, shipment, transport, passage, mix, concoction
Medical definitions for  infiltration n. 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. 
Other words from infiltration in•fil′ tra•tive  (-trə-tĭv ) adj. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.