infiltrate
verb
in·fil·trate
ˈin-(ˌ)fil-ˌtrāt 
in-ˈfil-
in-ˈfil-
infiltrated; infiltrating
1
: to enter or become established in gradually or unobtrusively usually for subversive purposes
the intelligence staff had been infiltrated by spies
2
: to pass (troops) singly or in small groups through gaps in the enemy line
3
: to pass into or through (a substance) by filtering or permeating
4
: to cause (something, such as a liquid) to permeate something by penetrating its pores or interstices
: to enter, permeate, or pass through a substance or area by filtering or by insinuating gradually
infiltrate
noun
Examples of infiltrate in a Sentence
The gang was infiltrated by undercover agents.
Attempts to infiltrate undercover agents into the gang have failed.
Water can easily infiltrate the soil.
Recent Examples on the Web
Social media, and the multitude of trends that infiltrate the average teen’s feeds, may disrupt the formation of a healthy self-esteem by feeding them information that damages their self-image.
—
Sherri Gordon, Clc, Parents, 29 Nov. 2024
Keeping the salt line downstream is especially important because there is not ample infrastructure in the region for desalinization to be a viable option if the salt line were to infiltrate the drinking water system in the near future, Shallcross said.
—Julia Jacobo, ABC News, 27 Nov. 2024
Since infiltrating Apple’s App Store is difficult, hackers trick people into downloading apps from third-party stores or random websites.
—Kurt Knutsson, Cyberguy Report, Fox News, 25 Nov. 2024
As technology continues to infiltrate and transform mathematics, the question will only become more pressing.
—Joseph Howlett, WIRED, 24 Nov. 2024
See all Example Sentences for infiltrate 
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Sherri Gordon, Clc, Parents, 29 Nov. 2024
Keeping the salt line downstream is especially important because there is not ample infrastructure in the region for desalinization to be a viable option if the salt line were to infiltrate the drinking water system in the near future, Shallcross said.
—Julia Jacobo, ABC News, 27 Nov. 2024
Since infiltrating Apple’s App Store is difficult, hackers trick people into downloading apps from third-party stores or random websites.
—Kurt Knutsson, Cyberguy Report, Fox News, 25 Nov. 2024
As technology continues to infiltrate and transform mathematics, the question will only become more pressing.
—Joseph Howlett, WIRED, 24 Nov. 2024
See all Example Sentences for infiltrate
Dictionary Entries Near infiltrate
Cite this Entry
“Infiltrate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/infiltrate. Accessed 3 Dec. 2024.
Copy CitationKids Definition
infiltrate
verb
in·fil·trate
in-ˈfil-ˌtrāt
ˈin-(ˌ)fil-
ˈin-(ˌ)fil-
infiltrated; infiltrating
1
: to pass into or through by filtering
2
: to enter or become established gradually or secretly
Medical Definition
infiltrate
1 of 2 verb
in·fil·trate
in-ˈfil-ˌtrāt
ˈin-(ˌ)
ˈin-(ˌ)
infiltrated; infiltrating
1
: to cause (as a liquid) to permeate something by penetrating its pores or interstices
infiltrate tissue with a local anesthetic
2
: to pass into or through (a substance) by filtering or permeating
: to enter, permeate, or pass through a substance or area
infiltrate
2 of 2 noun
: something that passes or is caused to pass into or through something by permeating or filtering
especially
: a substance that passes into the bodily tissues and forms an abnormal accumulation
a lung infiltrate
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