[in-fil-treyt, in-fil-treyt] 
verb, -trat⋅ed, -trat⋅ing, noun | 1. | to filter into or through; permeate. |
| 2. | to cause to pass in by filtering. |
| 3. | to move into (an organization, country, territory, or the like) surreptitiously and gradually, esp. with hostile intent: The troops infiltrated the enemy lines. |
| 4. | to pass a small number of (soldiers, spies, or the like) into a territory or organization clandestinely and with hostile or subversive intent: The intelligence agency infiltrated three spies into the neighboring country. |
| 5. | to pass into or through a substance, place, etc., by or as by filtering. |
| 6. | Pathology. to penetrate tissue spaces or cells. |
| 7. | something that infiltrates. |
| 8. | Pathology. any substance penetrating tissues or cells and forming a morbid accumulation. |
| in·fil·trate (ĭn-fĭl'trāt', ĭn'fĭl-) v. in·fil·trat·ed, in·fil·trat·ing, in·fil·trates v. tr.
To gain entrance gradually or surreptitiously. n. One that infiltrates, especially an abnormal substance that accumulates gradually in cells or body tissues. in·fil'tra·tive (-trə-tĭv) adj., in·fil'tra·tor n. |
infiltrate in·fil·trate (ĭn-fĭl'trāt', ĭn'fĭl-)
v. in·fil·trat·ed, in·fil·trat·ing, in·fil·trates
To cause a liquid to permeate a substance by passing through its interstices or pores.
To permeate a porous substance with a liquid or gas.
treɪt