Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
penetrable is an adjective meaning "admitting of penetration or passage into or through". It carries 2 recorded senses.
admitting of penetration or passage into or through
“a penetrable wall”
“penetrable defenses”
Definitions, synonyms and semantic relations for penetrable come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.