[ 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

Words Nearby interpenetrate Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use interpenetrate in a sentence

  • When our glances encounter each other, our souls rush forth in them, and seem to join and interpenetrate each other.

    Pepita Ximenez | Juan Valera
  • Present-day man possesses four bodies of increasing fineness, the elements of which interpenetrate.

    Reincarnation | Th. Pascal
  • Ethics and science have their own domains, which touch but do not interpenetrate.

  • Each atom is surrounded by a field, formed of the atoms of the four higher planes, which surround and interpenetrate it.

    Occult Chemistry | Annie Besant and Charles W. Leadbeater
  • All was so still that sleep seemed to interpenetrate the structure, causing the very moonlight to look discordantly awake.

    Lilith | George MacDonald

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