Medical Dictionary

levator labii superioris

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noun levator la·bii su·pe·ri·or·is \-ˈlā-bē-ˌī-su̇-ˌpir-ē-ˈȯr-əs\

Medical Definition of levator labii superioris

  1. :  a facial muscle arising from the lower margin of the orbit and inserting into the muscular substance of the upper lip which it elevates—called also quadratus labii superioris

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feeling or affected by lethargy

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