pycnodysostosis

noun

pyc·​no·​dys·​os·​to·​sis

variants or pyknodysostosis

ˌpik-nō-ˌdis-ä-ˈstō-səs

plural pycnodysostoses

-ˌsēz

: a rare genetic condition inherited as an autosomal recessive trait and characterized especially by short stature, fragile bones, shortness of the fingers and toes, failure of the anterior fontanel to close properly, and a receding chin