plexus

noun

1. A network of anastomosing or interwoven nerves, blood vessels, or lymphatic vessels.

   “I have the sensation of being immersed in the very plexus of life, focal from whatever place, position or attitude I take my stance.”

2. An interwoven combination of parts or elements in a structure or system.
3. An interwoven combination of parts or elements in a structure or system.

   “Plexus (Lat.). The system of equations required for the complete expression of the relations which exist between a set of quantities.”