- v penetrate mutually or be interlocked
The territories of two married people interpenetrate a lot
- v spread or diffuse through
- The European nations, emerging from their mutual war preoccupation, will soon begin again to interpenetrate the Orient in earnest.
- The incisions are made, and one of the monkey's gonads is sliced into six pieces thin enough for the interstitial cells of the patient quickly to interpenetrate them.
- Different atomic groups may interpenetrate each other at the edges without their electrons becoming detached.
- Pope Benedict XVI in Zenit News Agency
Benedict XVI explained that with faith, it is possible to see that "the heavenly and earthly cities interpenetrate and are intrinsically ordered to one another, inasmuch as they both belong to God the Father."