Medical Dictionary


noun semi·spi·na·lis \-ˌspī-ˈnā-ləs\

Medical Definition of semispinalis



  1. :  any of three muscles of the cervical and thoracic parts of the spinal column that arise from transverse processes of the vertebrae and pass to spinous processes higher up and that help to form a layer underneath the sacrospinalis muscle:a:  semispinalis thoracisb:  semispinalis cervicisc:  semispinalis capitis

Seen and Heard

What made you want to look up semispinalis? Please tell us where you read or heard it (including the quote, if possible).