from The American Heritage® Dictionary of the English Language, 4th Edition
- intransitive v. To become mixed or united by penetration: planes that interpenetrate in a painting.
- transitive v. To penetrate reciprocally: The streams interpenetrate each other at the rapids.
- transitive v. To penetrate thoroughly; permeate or pervade.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To penetrate mutually or reciprocally
- v. To permeate or pervade
from the GNU version of the Collaborative International Dictionary of English
- intransitive v. To penetrate each the other; to penetrate between bodies or their parts.
- transitive v. To penetrate between or within; to penetrate mutually.
from The Century Dictionary and Cyclopedia
- To penetrate or pass into reciprocally; unite with by mutual penetration.
- To penetrate between or among (the component parts of a body or substance); pass into or within the different parts of (a body); penetrate in various directions or throughout.
- To penetrate mutually; become united by mutual penetration.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. penetrate mutually or be interlocked
- v. spread or diffuse through
Commercial and noncommercial spaces interpenetrate.
Kate Elliott adds another sensible answer, which is that the religion, whatever it is, should be thoroughly worked out as a part of good world-building, and should interpenetrate with the other parts of the culture.
With the imaginary, "mind and material do not squarely meet and interpenetrate."
As for the "epiphenomena" - at least the ones Frye postulates, since mythos, ethos and dianoia are Aristotelian terms, as far as I'm aware (and also somewhat more abstract and complex than their modern counterparts "plot", "character" and "idea") - Frye himself tack them on as names of categories containing the low-level features you probably have in mind and admits that they often interpenetrate.
Similarly, McEwan has learned to diffuse and interpenetrate character flaws to an almost universal level -- it is difficult to think of a single character in Solar who is nice, who lacks a crucial flaw -- and that is just wonderful!
Does that imply a process of getting to know the fantastic, and letting it infect and interpenetrate your life?
To the untaught mind, my statement that alcohol and water interpenetrate on the molecular level might be taken on faith, but not in any other way.
As I feel their life essence interpenetrate my own, as I feel kinship with them, as my heart opens, I take joy in them as ends in themselves.
So the story told by the Benin exhibition above is very illustrative; the cultural content and depictions of the two communities -- Benin and Portugal -- interpenetrate each other in the next moment in time, and neither is unchanged as a result.
The deepest they can get is to interpenetrate beyond the skin by about a few millimeters.