Phrases starting with the letter: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Previous word: sternson
Next word: sternutation
Definition of: sternum
(stûr′nəm) noun plural ·na (-nə) or ·nums
1. Anat. The breastbone which forms the ventral support of the ribs in most vertebrates.
2. Zool. The ventral portion of a somite in an arthropod, as an insect or crustacean. [<L <Gk. sternon breast]
Comment about this word, ask questions, or add new information about this topic: