Skip to Content
Medical Term:


Pronunciation: kă-rī′nă, -rī′nē


  1. In humans, a term applied or applicable to several anatomic structures forming a projecting central ridge.
  2. That portion of the sternum in a bird, bat, or mole that serves as the origin of the pectoral muscles; it is not found in flightless birds or in most mammals.

[L. the keel of a boat]

© Copyright 2016 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.