Dictionary entries for 'infiltrate'

Synonyms

in·fil·trate (ĭn-fĭĺtrāt́, ĭńfĭl-)

verb: -trat·ed, -trat·ing, -trates.

1. To pass (troops, for example) surreptitiously into enemy-held territory.
2. To penetrate with hostile intent: infiltrate enemy lines; terrorists that had infiltrated the country.
To enter or take up positions in gradually or surreptitiously, as for purposes of espionage or takeover: infiltrated key government agencies with spies.
To cause (a liquid, for example) to permeate a substance by passing through its interstices or pores.
To permeate (a porous substance) with a liquid or gas.

One that infiltrates, especially an abnormal substance that accumulates gradually in cells or body tissues.