Crossword clue: the quality of being penetrable (by people or light or missiles etc.)
2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).
Possible answers
the quality of being penetrable (by people or light or missiles etc.)
the quality of being penetrable (by people or light or missiles etc.)
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Similar clues
the quality of being impenetrable (by people or light or missiles etc.)
75% similar
→ imperviousness