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Definitions

infiltration

[in-fil-trey-shuhn] / ˌɪn fɪlˈtreɪ ʃən /






NOUN
seepage
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It is a paranoid reflex that turns any hint of infiltration into proof of betrayal.

From Salon • Apr. 25, 2026

"We show that increased infiltration of T cells that are attacking tumor cells translates into a therapeutic benefit for patients with glioblastoma," said Chiocca, who is also a co-senior author of the study.

From Science Daily • Mar. 20, 2026

In a statement on Monday, Hezbollah said it detected "the infiltration of approximately 15 Israeli enemy helicopters" from the Syrian side of the border in eastern Lebanon, an area where Hezbollah holds sway.

From Barron's • Mar. 8, 2026

Analysts estimate the area is smaller and that Ukraine has mainly cleared the area of Russian infiltration teams.

From The Wall Street Journal • Feb. 24, 2026

“We’ve seen the infiltration over the last two months or so,” he said.

From "Fallen Angels" by Walter Dean Myers




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