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   infiltrate

   /ˈɪnf(ɪ)ltreɪt/

   verb

   • 1. enter or gain access to (an organization, place, etc.) surreptitiously and gradually, especially in order to acquire secret information: "the organization has been infiltrated by informers" Similar penetrateinvadeintrude oninsinuate oneself intoworm one's way intosneak intoslip intocreep intoimpinge ontrespass onbutt intoinformal:gatecrashmuscle in on
   • ▪ gradually permeate or become a part of: "computing has infiltrated most professions now"
   • ▪ (of a tumour, cells, etc.) spread into or invade (a tissue or organ): "one of the tumours infiltrated the submucosa"
   • 2. (of a liquid) permeate (something) by filtration: "virtually no water infiltrates deserts such as the Sahara" Similar permeatepenetratepervadefilter throughpercolate throughspread throughseep intoseep throughsoak intoflow intopass intoget intoenter
   • ▪ cause (a liquid) to permeate something by filtration: "lignocaine was infiltrated into the wound"

   noun

   • 1. an infiltrating substance or a number of infiltrating cells: "a chest radiograph revealed a patchy infiltrate in the left lower lobes"

   Word Origin Middle English (as infiltration): from in-2 + filtrate.

   Derivatives

   • 1. infiltrator noun

   Scrabble Points: 13

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     1

   • N

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   • F

     4

   • I

     1

   • L

     1

   • T

     1

   • R

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   • A

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   • E

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