plexus

Noun

plexus (plural plexuses or plexus or plexi)

1. 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.
   • Sensitive reader, start not at the apparition! Oxford is a plexus of anomalies. These two youths were (odd as it may seem to you) subject to the same Statutes, affiliated to the same College, reading for the same School; aye! and though the one had inherited half a score of noble and castellated...1911 October 26, Max Beerbohm, Zuleika Dobson, or, An Oxford Love Story, 1st American edition, New York, N.Y.: John Lane Company, published 1912, →OCLC
   • I have the sensation of being immersed in the very plexus of life, focal from whatever place, position or attitude I take my stance.1934, Henry Miller, Tropic of Cancer, Grove Press, published 1961
3. 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