different between dwarfism vs pycnodysostosis

English

dwarf +? -ism

dwarfism (plural dwarfisms)

The condition of being a dwarf.
- 1985, J. D. Esko et al., "Animal Cell Mutants Defective in Glycosaminoglycan Biosynthesis," Proceedings of the National Academy of Sciences of the United States of America, vol. 82, no. 10, p. 3200,
  Studies of disproportionate dwarfisms in animals have revealed the importance of core proteins an sulfation in the development of cartilage.

From Ancient Greek ?????? (puknós, “dense”) + dys- (“defective”) +? ostosis (“condition of the bone”).

pycnodysostosis (countable and uncountable, plural pycnodysostoses)

(medicine) A genetic disorder characterized by dense, fragile bones and dwarfism.

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