nounpl. -·uses or -·us
- a complexly interconnected arrangement of parts; network
- Anat. a network of blood vessels, lymphatic vessels, nerves, etc.: the solar plexus (of nerves) in the abdomen
Origin of plexusModern Latin from L, a twining, braid from past participle of plectere, to twine, braid; akin to plicare: see ply
nounpl. plexus, or plex·us·es
- A structure in the form of a network, especially of nerves, blood vessels, or lymphatics: the cardiac plexus; the pelvic plexus.
- A combination of interlaced parts; a network.
Origin of plexusNew Latin from Latin braid from past participle of plectere to plait ; see plek- in Indo-European roots.
(plural plexus or plexuses)
Latin, from plex-, past participle stem of plectere (“plait, interweave").