Medical Dictionary

accessorius

play
noun ac·ces·so·ri·us \ˌak-sə-ˈsōr-ē-əs, -ˈsȯr-\

Medical Definition of accessorius

plural

accessorii

\-ē-ˌī, -ē-ˌē\play
  1. 1:  a muscle reinforcing the action of another

  2. 2:  accessory nerve


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a dividing ridge between drainage areas

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