English word xiphocostal comes from English costal, English xiphoid

Detailed word origin of xiphocostal

Dictionary entry	Language	Definition
costal	English (eng)	(biology) Pertaining to a costa. (entomology) Pertaining to the costa and/or to the wing areas next to it. Pertaining to a rib.
xiphoid	English (eng)	(anatomy) The xiphoid process. Of or relating to the xiphisternum.. Shaped like a sword, ensiform.
xiphocostal	English (eng)	(anatomy) Pertaining to the xiphoid process and the ribs.