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Definition of Plexus coccygeus
1. Noun. A small plexus formed by the fifth sacral and coccygeal nerves.
Medical Definition of Plexus coccygeus
1. A small plexus formed by the fifth sacral and the coccygeal nerves; it gives origin to the anococcygeal nerves. Synonym: plexus coccygeus. (05 Mar 2000)