plexus

Etymology

Borrowed from Latin plexus (“a twining, plaiting, braid”).

noun

  1. (anatomy) A network of anastomosing or interwoven nerves, blood vessels, or lymphatic vessels.
  2. An interwoven combination of parts or elements in a structure or system.
    1. (mathematics) The system of equations required for the complete expression of the relations which exist between a set of quantities.
      Plexus (Lat.). The system of equations required for the complete expression of the relations which exist between a set of quantities. 1866, Brande & C, A Dictionary of Science, Literature, & Art, page 935

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