Infiltrate In*fil"trate, v. i. [imp. & p. p. {Infiltrated}; p. pr. & vb. n. {Infiltrating}.] [Pref. in- + filtrate: cf. F, s'infiltrer. Cf. {Infilter}.] 1. To enter by penetrating the pores or interstices of a substance; to filter into or through something. [1913 Webster]

The water infiltrates through the porous rock. --Addison. [1913 Webster]

2. To enter secretly (into an organization, territory, etc.) for hostile purposes, such as spying or sabotage; as, the FBI infiltrated into the U. S. communist party's upper echelons; also used transitively; as, to infiltrate the opponent's organization; to infiltrate one's agents into a hostile country. [PJC]

The Collaborative International Dictionary of English. 2000.

(into a porous substance), ,

Look at other dictionaries:

  • Infiltrate — In*fil trate, v. t. To penetrate gradually; sometimes used reflexively. J. S. Mill. [1913 Webster] …   The Collaborative International Dictionary of English

  • infiltrate — index encroach, enter (penetrate), interject, interpose, penetrate, permeate, pervade Burton s Legal Th …   Law dictionary

  • infiltrate — (v.) 1758, of fluids, from IN (Cf. in ) (2) in + FILTRATE (Cf. filtrate). Related: Infiltrated; infiltrating. Military sense of penetrate enemy lines attested from 1934 …   Etymology dictionary

  • infiltrate — [v] creep in access, crack*, edge in, filter through, foist, impregnate, insinuate, penetrate, percolate*, permeate, pervade, saturate, sneak in, tinge, work into, worm into*; concepts 159,179 …   New thesaurus

  • infiltrate — ► VERB 1) surreptitiously and gradually enter or gain access to (an organization or place). 2) permeate or cause to permeate by filtration. DERIVATIVES infiltration noun infiltrator noun …   English terms dictionary

  • infiltrate — [in fil′trāt, in′fil trāt΄] vi., vt. infiltrated, infiltrating [ IN 1 + FILTRATE] 1. to pass, or cause (a fluid, cell, etc.) to pass, through small gaps or openings; filter 2. to pass through, as in filtering 3. to pass, or cause (individual… …   English World dictionary

  • infiltrate — [[t]ɪ̱nfɪltreɪt[/t]] infiltrates, infiltrating, infiltrated 1) VERB If people infiltrate a place or organization, or infiltrate into it, they enter it secretly in order to spy on it or influence it. [V n] Activists had infiltrated the student… …   English dictionary

  • infiltrate — in|fil|trate [ˈınfıltreıt US ınˈfıltreıt, ˈınfıl ] v 1.) [>I always + adv/prep, T] to secretly join an organization or enter a place in order to find out information about it or harm it ▪ Police attempts to infiltrate neo Nazi groups were… …   Dictionary of contemporary English

  • Infiltrate — To penetrate. If an IV infiltrates, the IV fluid penetrates the surrounding tissue. * * * 1. To perform or undergo infiltration. 2. SYN: infiltration (2). 3. A cellular infiltration (1) in the lung as inferred from appearance of a localized, ill… …   Medical dictionary

  • infiltrate — UK [ˈɪnfɪltreɪt] / US [ˈɪnfɪlˌtreɪt] / US [ɪnˈfɪlˌtreɪt] verb [intransitive/transitive] Word forms infiltrate : present tense I/you/we/they infiltrate he/she/it infiltrates present participle infiltrating past tense infiltrated past participle… …   English dictionary

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