Is “Xiphisternum” a Scrabble word?
Yes
XIPHISTERNUM
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Xiphisternum
noun
1.The xiphoid process, a small cartilaginous extension to the lower part of the sternum, usually ossified in the adult human.