( a. )
Incapable of being penetrated or pierced; not admitting the passage of other bodies; not to be entered; impervious; as, an impenetrable shield.
( a. )
Incapable of being penetrated or pierced; not admitting the passage of other bodies; not to be entered; impervious; as, an impenetrable shield.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012