Definitions
Secret entry into a place or the gradual spread into something.
Word origin
From Middle English infiltracioun, from Medieval Latin infiltrātiōnem, infiltrātiō. By surface analysis, infiltrat(e) + -ion.
Used in a sentence
“calcareous infiltrations filling the cavities”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Secret entry”12 letters
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