Plexus
Pronunciation : Plex"us, n.; pl. L. Plexus
Part of Speech : E.
Etymology : [L., a twining, braid, fr. plectere, plexum, to twine, braid.]
Definition : 1. (Anat.)
Defn: A network of vessels, nerves, or fibers.
2. (Math.)
Defn: The system of equations required for the complete expression of the relations which exist between a set of quantities. Brande & C.
Plexuses.
Source : Webster's Unabridged Dictionary, 1913