‖ serratus Anat.
(sɛˈreɪtəs)
[mod.L. use of L. serrātus serrate.]
Any of certain muscles which are inserted into the vertebral or costal region in such a way as to suggest a serrated border; esp. short for serratus magnus, which connects the eight upper ribs and the vertebral border of the shoulder-blade.
| 1881 Mivart Cat 279 Where it [posterior thoracic nerve] lies upon the serratus muscle. 1899 Allbutt's Syst. Med. VII. 210 The posterior border of the scapula projects like a wing owing to paralysis of the serratus. |