: a rare genetic disorder characterized especially by hypercalcemia of infants, heart defects (as supravalvular aortic stenosis), characteristic facial features (as an upturned nose, long philtrum, wide mouth, full lips, and pointed chin), a sociable personality, and a high verbal aptitude, but with mild to moderate mental retardation
Biographical Note for WILLIAMS SYNDROME
Williams,J. C. P.(flourished 1961), New Zealand cardiologist. Williams was the principal author on a 1961 article on supravalvular aortic stenosis, with B. G. Barratt-Boyes and J. B. Lowe listed as secondary authors.