We found 24 dictionaries with English definitions that include the word impenetrable:
Click on the first link on a line below to go directly to a page where "impenetrable" is defined.
 General (21 matching dictionaries)
- impenetrable: American Heritage Dictionary of the English Language [home, info]
- impenetrable: Merriam-Webster's Online Dictionary, 11th Edition [home, info]
- impenetrable: Cambridge International Dictionary of English [home, info]
- impenetrable: Wiktionary [home, info]
- impenetrable: Webster's New World College Dictionary, 4th Ed. [home, info]
- impenetrable: The Wordsmyth English Dictionary-Thesaurus [home, info]
- impenetrable: Infoplease Dictionary [home, info]
- Impenetrable, impenetrable: Dictionary.com [home, info]
- impenetrable: UltraLingua English Dictionary [home, info]
- impenetrable: Cambridge Dictionary of American English [home, info]
- Impenetrable: Wikipedia, the Free Encyclopedia [home, info]
- Impenetrable: Online Plain Text English Dictionary [home, info]
- impenetrable: Webster's Revised Unabridged, 1913 Edition [home, info]
- impenetrable: Rhymezone [home, info]
- impenetrable, impenetrable, impénétrable: AllWords.com Multi-Lingual Dictionary [home, info]
- impenetrable: Webster's 1828 Dictionary [home, info]
- impenetrable: Free Dictionary [home, info]
- impenetrable: Mnemonic Dictionary [home, info]
- impenetrable: WordNet 1.7 Vocabulary Helper [home, info]
- impenetrable: LookWAYup Translating Dictionary/Thesaurus [home, info]
- impenetrable: Dictionary/thesaurus [home, info]
Medicine (2 matching dictionaries)
- impenetrable: Technical and Popular Medical Terms [home, info]
- impenetrable: online medical dictionary [home, info]
Science (1 matching dictionary)
- Impenetrable: Biological Sciences Dictionary [home, info]
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Quick definitions (impenetrable)
▸ adjective: not admitting of penetration or passage into or through ("An impenetrable fortress")
▸ adjective: impossible to understand ("Impenetrable jargon")
▸ adjective: permitting little if any light to pass through because of denseness of matter ("Impenetrable gloom")
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