[ plek-suh s ]
/ ˈplɛk səs /

noun, plural plex·us·es, plex·us.

a network, as of nerves or blood vessels.
any complex structure containing an intricate network of parts: the plexus of international relations.


Origin of plexus

1675–85; < New Latin: an interweaving, twining, equivalent to Latin plect(ere) to plait, twine + -tus suffix of v. action Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for plexus

British Dictionary definitions for plexus


/ (ˈplɛksəs) /

noun plural -uses or -us

any complex network of nerves, blood vessels, or lymphatic vessels
an intricate network or arrangement

Word Origin for plexus

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.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for plexus


[ plĕksəs ]

n. pl. plexus

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