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v. in·fil·trat·ed, in·fil·trat·ing, in·fil·trates
a. To pass (troops, for example) surreptitiously into enemy-held territory.
b. To penetrate with hostile intent: infiltrate enemy lines; terrorists that had infiltrated the country.
2. To enter or take up positions in gradually or surreptitiously, as for purposes of espionage or takeover: infiltrated key government agencies with spies.
3. To cause (a liquid, for example) to permeate a substance by passing through its interstices or pores.
4. To permeate (a porous substance) with a liquid or gas.
To gain entrance gradually or surreptitiously.
One that infiltrates, especially an abnormal substance that accumulates gradually in cells or body tissues.
in·fil′tra·tive (-trə-tĭv) adj.
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|Noun||1.||infiltrator - someone who takes up a position surreptitiously for the purpose of espionage|
|2.||infiltrator - an intruder (as troops) with hostile intent|