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[in-ter-pen-i-treyt] /ˌɪn tərˈpɛn ɪˌtreɪt/
verb (used with object), interpenetrated, interpenetrating.
to penetrate thoroughly; permeate.
to penetrate with (something else) mutually or reciprocally.
verb (used without object), interpenetrated, interpenetrating.
to penetrate between things or parts.
to penetrate each other.
Origin of interpenetrate
1800-10; inter- + penetrate
Related forms
[in-ter-pen-i-truh-buh l] /ˌɪn tərˈpɛn ɪ trə bəl/ (Show IPA),
interpenetrant, adjective
interpenetration, noun
interpenetrative, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for interpenetrate
Historical Examples
  • All the essences see each other and interpenetrate each other in the most intimate depth of their nature.

    Plotinos: Complete Works, v. 2 Plotinos (Plotinus)
  • They interpenetrate and a change in one affects all the others.

    A Preface to Politics Walter Lippmann
  • Whatever be its solution, all the individual phases mutually extend and interpenetrate one another.

  • Present-day man possesses four bodies of increasing fineness, the elements of which interpenetrate.

    Reincarnation Th. Pascal
  • They interpenetrate, interlace, correspond with and embrace each other.

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

    Pepita Ximenez Juan Valera
  • Yet their world and the world of man intermingle, interpenetrate, and "throw their shadows upon each other," says Paracelsus.

  • They interpenetrate, and neither can be adequately dealt with apart from the considerations appropriate to the other.

  • All was so still that sleep seemed to interpenetrate the structure, causing the very moonlight to look discordantly awake.

    Lilith George MacDonald
  • You cannot in the actual man cut soul and body asunder; they interpenetrate in every member.

British Dictionary definitions for interpenetrate


to penetrate (something) thoroughly; pervade
to penetrate each other or one another mutually
Derived Forms
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
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Word Origin and History for interpenetrate

1809, from inter- + penetrate. Related: Interpenetrated; interpenetrating.

Online Etymology Dictionary, © 2010 Douglas Harper
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