Definition of impenetrable Impenetrable

/ɪmpɛˈnʌtɹʌbʌl/ - [impenutrubul] - im•pen•e•tra•ble

We found 11 definitions of impenetrable from 6 different sources.

What does impenetrable mean?

Adjective
impenetrable - not admitting of penetration or passage into or through; "an impenetrable fortress"; "impenetrable rain forests"
		penetrable admitting of penetration or passage into or through; "a penetrable wall"; "penetrable defenses"
impenetrable - impossible to understand; "impenetrable jargon"
		uncomprehensible, incomprehensible difficult to understand; "the most incomprehensible thing about the universe is that it is comprehensible"- A. Einstein
impenetrable - permitting little if any light to pass through because of denseness of matter; "dense smoke"; "heavy fog"; "impenetrable gloom"
		dense, heavy
		thick abounding; having a lot of; "the top was thick with dust"

= synonym
= antonym
= related word

impenetrable (a.)
Incapable of being penetrated or pierced; not admitting the passage of other bodies; not to be entered; impervious; as, an impenetrable shield.
impenetrable (a.)
Having the property of preventing any other substance from occupying the same space at the same time.
impenetrable (a.)
Inaccessible, as to knowledge, reason, sympathy, etc.; unimpressible; not to be moved by arguments or motives; as, an impenetrable mind, or heart.

impenetrable
im-pen′e-tra-bl, adj. incapable of being pierced: preventing another body from occupying the same space at the same time: not to be impressed in mind or heart.—n. Impenetrabil′ity, one of the essential properties of matter, implying that no two bodies can at the same time occupy the same space.—adv. Impen′etrably