impervious
1 ENTRIES FOUND:
Britannica Dictionary definition of IMPERVIOUS
[more impervious; most impervious]
1
technical
:
not allowing something (such as water or light) to enter or pass through
— usually + to
-
a substance impervious to light
-
a coat impervious to rain
2
formal
:
not bothered or affected by something
— usually + to
-
He seems impervious to criticism.
