Definition of infiltrate in English:

infiltrate

verb

[with object]
  • 1Enter 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’
    • ‘It propagates paranoia about the Third World's dark intentions to gatecrash and infiltrate the Western World over a period of time, and take it over eventually.’
    • ‘From 1999 until early 2001, Lauder infiltrated the organised racist movement in Canada.’
    • ‘A secret land, infiltrated by humans, and the loss of spirituality is at stake.’
    • ‘One officer so deeply infiltrated the Communist Party that he traveled to the Soviet Union.’
    • ‘Mr Santos told reporters that there were indications the security forces had been infiltrated at a very high level.’
    • ‘The initial Federal raid relied upon surprise for safety, and grabbed the evidence after successfully infiltrating the place.’
    • ‘I think they'd recognize if Senator Hatch or I tried to infiltrate the organization.’
    • ‘Well, I believe the electronic surveillance has importance, but we really need to infiltrate the terrorist organizations.’
    • ‘For the next four decades, a small minority from certain Iraqi towns would gradually infiltrate the highest governmental positions as well as the top officer ranks in the army.’
    • ‘The organisation has been heavily infiltrated by informers and many of its members are now in jail.’
    • ‘They often disguise their affiliation by wearing civilian clothes, and they often carry arms covertly to infiltrate various places.’
    • ‘This is why I sometimes think we should infiltrate the Countryside Alliance - we'd get more cameras pointed at us then…’
    • ‘Now that we have a common picture of the communications architecture, we must discuss using information to successfully infiltrate an enemy's position.’
    • ‘I hope that we continue to have brave men and women who infiltrate these organizations in order to help to protect society.’
    • ‘It will take years for the intelligence organizations to infiltrate terrorist organizations and be in a position to carry out these assassinations.’
    • ‘It is infiltrating their organizations beyond bombing their training bases.’
    • ‘They were criminals recruited by an MI6 officer to infiltrate the IRA.’
    • ‘They have infiltrated organizations large and small.’
    • ‘He said intelligence agents and police informers had infiltrated villages in the area and worked as drivers, masons and hawkers for months to gather information about Veerappan and his men who were suspected to be hiding nearby.’
    • ‘Your intrepid blogger promises to infiltrate this suspicious-sounding organization and report the truth!’
    penetrate, invade, intrude on, insinuate oneself into, worm one's way into, sneak into, slip into, creep into, impinge on, trespass on, butt into
    View synonyms
    1. 1.1 Gradually permeate or become a part of.
      ‘computing has infiltrated most professions now’
      • ‘Spencer said one of the major steps was to encourage followers to enter the ministry of various churches and to infiltrate North America's schools and teaching colleges.’
      • ‘Capitalism has infiltrated the Scottish Socialists' camp.’
      • ‘The discrimination exists across all of society and, according to this research, has infiltrated into the agencies charged with confronting the problem.’
      • ‘Postmodernists claim that science, no less than religion and literature and philosophy, is infiltrated with culture.’
      • ‘Nothing against those particular bands, but their sound has evidently infiltrated the very atmosphere of our fair cities.’
      • ‘Shamanic thought is gradually infiltrating the greater Pagan community.’
      • ‘How much of Atheism has infiltrated into legislative and executive branches at all levels of government?’
      • ‘Japanese leisure is also infiltrating U.S. culture.’
      • ‘The ensuing Meiji policy of modernization allowed Western ideas, institutions, and culture to infiltrate Japan.’
      • ‘And it's certainly true that our style has infiltrated into the style of singing and congregational worship in this church.’
      • ‘The fascist bent that infiltrated Argentina in the 1930s was quite popular among conservative artists and intellectuals.’
      • ‘Does western culture and its values infiltrate traditional Indian values?’
      • ‘Foreign culture has constantly infiltrated China in the form of weapons and then at the mental and conceptual level.’
      • ‘It reads like a blog, but you only have to look at a couple of the images to know this is a commercially popular side of US culture and quickly infiltrating ours.’
      • ‘The way we dress, even the way we speak, is impinged on and infiltrated by these alien cultures.’
    2. 1.2Medicine (of a tumour, cells, etc.) spread into or invade (a tissue or organ)
      ‘one of the tumours infiltrated the submucosa’
      • ‘In this specimen, large lymphoid cells diffusely infiltrated muscle and fibrous tissue.’
      • ‘The tumor infiltrated into the coronary sinus.’
      • ‘Tumor cells also infiltrated the smooth muscle of the ciliary body.’
      • ‘The surrounding stroma was infiltrated by plasma cells and scattered aggregates of lymphocytes, forming follicles with germinal centres.’
      • ‘The lymphoid cells infiltrating all the organs were small round cells with scanty cytoplasm, morphologically similar to normal lymphocytes.’
  • 2(of a liquid) permeate (something) by filtration.

    ‘virtually no water infiltrates deserts such as the Sahara’
    • ‘In a few locations, spills of these liquids infiltrated the soil and created very large areas of contaminated groundwater and soil.’
    • ‘The holding pond should be emptied before it is full, when waste waters will infiltrate the soil.’
    • ‘In coastal regions, sea water can infiltrate the rocks, and a salt-water wedge will then form below sea level under the fresh groundwater.’
    • ‘That allows atmospheric carbon dioxide to infiltrate the weak paste and deeply carbonate the calcium hydroxide and other cement hydrates present.’
    • ‘Pits occur when water infiltrates a stone's pores and then freezes.’
    • ‘They know about erosion and filter effects on the landscape, but not what happens after water infiltrates the soil.’
    permeate, penetrate, pervade, filter through, percolate through, spread through, seep into, seep through, soak into, flow into, pass into, get into, enter
    View synonyms
    1. 2.1 Cause (a liquid) to permeate something by filtration.
      ‘lignocaine was infiltrated into the wound’
      • ‘Leaves were infiltrated with water according to Beyschlag and Pfanz to verify ICS.’
      • ‘For freeze fractures the glutaraldehyde-fixed cells were infiltrated with 30% glycerol.’
      • ‘Leaves were then infiltrated with deionized water under vacuum three times for 4 min to ensure complete infiltration.’
      • ‘To prepare a dysfunctional bundle for fixation, intercellular spaces of the sample were vacuum infiltrated with water, which rendered the parenchyma reasonably transparent and suitable for dissection.’
      • ‘The five trocars are removed and an additional 3 mL of the lidocaine/bupivicaine mixture is infiltrated into the port sites.’

noun

Medicine
  • An infiltrating substance or a number of infiltrating cells.

    ‘a chest radiograph revealed a patchy infiltrate in the left lower lobes’
    • ‘The triads may show a variable degree of ductal and ductular proliferation, and may even demonstrate edema and a neutrophilic infiltrate.’
    • ‘His follow-up radiograph 10 days after the initiation of prednisone showed a substantial decrease of the infiltrate.’
    • ‘The bone marrow was replaced by an infiltrate of blast cells with medium-sized nuclei, multiple nucleoli, and moderate amounts of cytoplasm.’
    • ‘Although the chest radiograph may be normal initially, subsequent radiographs will reveal an infiltrate, which may extend rapidly, involving one or more lobes as well as the pleura.’

Origin

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

Pronunciation

infiltrate

/ˈɪnfɪltreɪt/