Impenetrable Im*pen"e*tra*ble, a. [L. impenetrabilis; pref. im- not + penetrabilis penetrable: cf. F. imp['e]n['e]trable.] 1. Incapable of being penetrated or pierced; not admitting the passage of other bodies; not to be entered; impervious; as, an impenetrable shield. [1913 Webster]

Highest woods impenetrable To star or sunlight. --Milton. [1913 Webster]

2. (Physics) Having the property of preventing any other substance from occupying the same space at the same time. [1913 Webster]

3. Inaccessible, as to knowledge, reason, sympathy, etc.; unimpressible; not to be moved by arguments or motives; as, an impenetrable mind, or heart. [1913 Webster]

They will be credulous in all affairs of life, but impenetrable by a sermon of the gospel. --Jer. Taylor. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • impénétrable — [ ɛ̃penetrabl ] adj. • v. 1390; lat. impenetrabilis 1 ♦ Où l on ne peut pénétrer; qui ne peut être traversé. ⇒ inaccessible. « Ces murs, impénétrables comme la tombe » (Gautier). Forêt impénétrable. Impénétrable à : qui ne peut être pénétré par.… …   Encyclopédie Universelle

  • impenetrable — adjetivo 1. (antepuesto / pospuesto) Que no se puede penetrar o atravesar: Era un bosque impenetrable, demasiado denso. Antónimo: penetrable. 2. (antepuesto / pospuesto) Que no se puede llegar a entender o descifrar, o que es difícil de… …   Diccionario Salamanca de la Lengua Española

  • impenetrable — Impenetrable. adj. de tout genre. Qui ne peut estre penetré. Cette cuirasse est d un si bon acier, d une si bonne trempe, qu elle est impenetrable aux coups de mousquet. un cuir impenetrable à l eau. il y a des forts dans ce bois là qui sont… …   Dictionnaire de l'Académie française

  • impenetrable — [im pen′i trə bəl] adj. [ME inpenetrable < Fr impénétrable < L impenetrabilis] 1. that cannot be penetrated or passed through [an impenetrable jungle] 2. that cannot be solved or understood; unfathomable; inscrutable 3. unreceptive to ideas …   English World dictionary

  • impenetrable — (adj.) mid 15c., from M.Fr. impenetrable, from L. impenetrabilis that cannot be penetrated, from assimilated form of in not, opposite of (see IN (Cf. in ) (1)) + penetrabilis penetrable (see PENETRATE (Cf. penetrate)). Related: Impenetrably;… …   Etymology dictionary

  • impenetrable — [adj1] dense bulletproof, close, compact, firm, hard, hermetic, impassable, impermeable, impervious, inviolable, solid, substantial, thick, unpiercable; concepts 483,604 Ant. clear, penetrable, permeable, porous, soft, thin impenetrable [adj2]… …   New thesaurus

  • impenetrable — I adjective adamantine, closed, complex, crass, difficult, dull, enigmatic, hidden, impassable, impermeable, imperviable, impervious, inaccessible, inapprehensible, incomprehensible, indefinable, inexplicable, inexpressive, inexpugnable,… …   Law dictionary

  • impenetrable — impervious, impermeable, *impassable Analogous words: *close, dense, compact, thick: solid, hard, *firm: compacted, concentrated, consolidated (see COMPACT vb): callous, *hardened, indurated: obdurate, adamant, inflexible Antonyms: penetrable… …   New Dictionary of Synonyms

  • impenetrable — (Del lat. impenetrabĭlis). 1. adj. Que no se puede penetrar. 2. Que no se puede comprender o descifrar. 3. Dicho de una persona: Que no deja traslucir sus opiniones o sentimientos …   Diccionario de la lengua española

  • impenetrable — ► ADJECTIVE 1) impossible to get through or into. 2) impossible to understand. 3) impervious to new ideas or influences. DERIVATIVES impenetrability noun impenetrably adverb …   English terms dictionary

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