Infiltrate Definition

ĭn-fĭltrāt, ĭnfĭl-
infiltrated, infiltrates, infiltrating
verb
infiltrated, infiltrates, infiltrating
To pass, or cause (a fluid, cell, etc.) to pass, through small gaps or openings; filter.
Webster's New World
To pass, or cause (individual troops) to pass, through weak places in the enemy's lines in order to attack the enemy's flanks or rear.
Webster's New World
To penetrate with hostile intent.
Infiltrate enemy lines; terrorists that had infiltrated the country.
American Heritage
To pass through, as in filtering.
Webster's New World
To enter or take up positions in gradually or surreptitiously, as for purposes of espionage or takeover.
Infiltrated key government agencies with spies.
American Heritage
noun
infiltrates
One that infiltrates, especially an abnormal substance that accumulates gradually in cells or body tissues.
American Heritage Medicine
Something that infiltrates.
Webster's New World
Synonyms:

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