part of part of serially homologous to sternum xiphoid process http://upload.wikimedia.org/wikipedia/commons/4/4d/Gray117.png xiphoid process of sternum xiphoideus UMLS:C0043356 NCIT:C33895 xiphoid process Wikipedia:Xiphoid_process MA:0001334 EMAPA:18725 MESH:D014989 metasternum xiphisternum xiphosternal junction A cartilaginous extension to the distal part of the sternum. xyphoid processus xiphoideus this class may represent a mixed bony-cartilage element, or it may be the superclass of either purely cartilage or purely ossified elements SCTID:272711000 xiphoid process xiphoid FMA:7488 UBERON:0002207 usually ossified in the adult human. By age 15 to 29, the xiphoid usually fuses to the body of the sternum with a fibrous joint. Unlike the synovial articulation of major joints, this is non-movable. Much the way the first seven ribs articulate with the sternum, the cartilage in the celiac plexus joins on the xiphoid process, reinforcing it, and indirectly attaches the costal cartilage to the sternum. sternebra skeletal element projection