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Definition of Plexus

Plexus: 1. In medicine, a network or tangle of lymphatic vessels, nerves, or veins. For example, the brachial plexus is a network of nerves leading to the arm. In general, any interwoven entity made up of elements in a structure or system.

Source: MedTerms™ Medical Dictionary
Last Editorial Review: 9/20/2012

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