INTERPENETRATED
Verb
interpenetrated
simple past tense and past participle of interpenetrate
Source: Wiktionary
INTERPENETRATE
In`ter*pen"e*trate, v. t.
Definition: To penetrate between or within; to penetrate mutually.
It interpenetrates my granite mass. Shelley.
In`ter*pen"e*trate, v. i.
Definition: To penetrate each the other; to penetrate between bodies or
their parts. Interpenetrating molding (Arch.), in late Gothic
architecture, a decoration by means of moldings which seem to pass
through solid uprights, transoms, or other members; often, two sets
of architectural members penetrating one another, in appearance, as
if both had been plastic when they were put together.
Source: Webster’s Unabridged Dictionary 1913 Edition