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Learn to pronounce in·fil·tra·tion

/ˌinfilˈtrāSH(ə)n/
noun
  1. the action of entering or gaining access to an organization or place surreptitiously, especially in order to acquire secret information or cause damage.
    "the army fenced parts of the border in an effort to stop militant infiltration"
  2. permeation of a liquid into something by filtration.
    "improved water infiltration into the soil"
  3. the process of gradually permeating or becoming a part of something.
    "the gradual infiltration of Boyce's music into the national consciousness"

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: to enter, permeate, or pass through a substance or area by filtering or by insinuating gradually. infiltrate noun. infiltration. ˌin-(ˌ)fil-ˈtrā-shən. noun.
7 days ago · the process of secretly becoming part of a group in order to get information or to influence the way that a group thinks or behaves:.
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a system of transporting troops or vehicles at extended and irregular intervals so as to avoid enemy observation or attack, especially from the air.
Infiltration is the process by which water on the ground surface enters the soil. It is commonly used in both hydrology and soil sciences.
/ˌɪnfɪlˈtreɪʃən/ · noun. a process in which individuals (or small groups) penetrate an area (especially the military penetration of enemy positions without ...
in·​fil·​tra·​tion ˌin-(ˌ)fil-ˈtrā-shən. 1. a. : the act or process of infiltrating. b. : something that infiltrates. anesthetic drug infiltration.
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a method of attack in which small bodies of soldiers or individual soldiers penetrate the enemy's line at weak or unguarded points in order to assemble ...
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a : to secretly enter or join (something, such as a group or an organization) in order to get information or do harm. The gang was infiltrated by undercover ...
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to secretly become part of a group in order to get information or to influence the way that group thinks or behaves: A journalist ...
to move into (an organization, country, territory, or the like) surreptitiously and gradually, especially with hostile intent: The troops infiltrated the enemy ...