• synonyms


[plek-suh s]
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noun, plural plex·us·es, plex·us.
  1. a network, as of nerves or blood vessels.
  2. any complex structure containing an intricate network of parts: the plexus of international relations.
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Origin of plexus

1675–85; < New Latin: an interweaving, twining, equivalent to Latin plect(ere) to plait, twine + -tus suffix of v. action
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


Examples from the Web for plexus

Historical Examples

  • How, then, is the greater length of the plexus to be covered by a single "missing link?"

    Life: Its True Genesis

    R. W. Wright

  • No a priori induction will ever extend this line or plexus to man.

  • Plexus: a knot: applied to a knot-like mass of nerves, or tracheae.

  • What is a plexus of the sun, and how doth it blow on a bull?

    The Panchronicon

    Harold Steele Mackaye

  • Lost, and forgotten in the plexus of the city's life, what had befallen them?

    The Octopus

    Frank Norris

British Dictionary definitions for plexus


noun plural -uses or -us
  1. any complex network of nerves, blood vessels, or lymphatic vessels
  2. an intricate network or arrangement
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Word Origin

C17: New Latin, from Latin plectere to braid, plait
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

Word Origin and History for plexus


1680s, Modern Latin, literally "braid, network," noun use of past participle of Latin plectere "to twine, braid, fold" (see complex (adj.)); used of a network, such as solar plexus "network of nerves in the abdomen" (see solar). Related: Plexal.

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Online Etymology Dictionary, © 2010 Douglas Harper

plexus in Medicine


n. pl. plexus
  1. A structure in the form of a network, especially of nerves, blood vessels, or lymphatics.
  2. A combination of interlaced parts; a network.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.