Try Our Apps


90s Slang You Should Know


[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
First recorded in 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. 2017.
Cite This Source
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
Cite This Source
Word Origin and History for interpenetrate

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

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for interpenetrate

Few English speakers likely know this word

Word Value for interpenetrate

Scrabble Words With Friends

Nearby words for interpenetrate