[ in-ter-pen-i-treyt ]

verb (used with object),in·ter·pen·e·trat·ed, in·ter·pen·e·trat·ing.
  1. to penetrate thoroughly; permeate.

  2. to penetrate with (something else) mutually or reciprocally.

verb (used without object),in·ter·pen·e·trat·ed, in·ter·pen·e·trat·ing.
  1. to penetrate between things or parts.

  2. to penetrate each other.

Origin of interpenetrate

First recorded in 1800–10; inter- + penetrate

Other words from interpenetrate

  • in·ter·pen·e·tra·ble [in-ter-pen-i-truh-buhl], /ˌɪn tərˈpɛn ɪ trə bəl/, adjective
  • in·ter·pen·e·trant, adjective
  • in·ter·pen·e·tra·tion, noun
  • in·ter·pen·e·tra·tive, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use interpenetrate in a sentence

  • By then enough of the worlds should have reached maturity to offer some hope of peaceful interpenetration.

    Victory | Lester del Rey
  • Flannery had almost hoped that it would be O'Neill who would handle the problem of cultural interpenetration.

    Victory | Lester del Rey
  • In order to form a rigid and stable whole, the several faces must be allied by reciprocal interpenetration at the angles.

  • We meet as water meets water, or as two currents of air mix, with perfect diffusion and interpenetration of nature.

    Essays, First Series | Ralph Waldo Emerson
  • At his porch appears the first French arch of double curvature, the earliest interpenetration of archivolts.

    How France Built Her Cathedrals | Elizabeth Boyle O'Reilly

British Dictionary definitions for interpenetrate


/ (ˌɪntəˈpɛnɪˌtreɪt) /

  1. to penetrate (something) thoroughly; pervade

  2. to penetrate each other or one another mutually

Derived forms of interpenetrate

  • interpenetrable, adjective
  • interpenetrant, adjective
  • interpenetration, noun
  • interpenetrative, adjective
  • interpenetratively, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012