a. [ Pref. a- not + sternal. ] (Anat.) Not sternal; -- said of ribs which do not join the sternum. [ 1913 Webster ]
a. [ Infra + sternal. ] (Anat.) Below the sternum;
a. Of or pertaining to the metasternum. [ 1913 Webster ]
a. (Anat.) Situated above, or anterior to, the sternum. [ 1913 Webster ]