Down syndrome

Down syndrome definition - medical

Down syndrome (doun) or Down's syndrome (dounz)

noun
A congenital disorder, caused by the presence of an extra 21st chromosome, in which the affected person has mild to moderate mental retardation, short stature, and a flattened facial profile. Also called trisomy 21, trisomy 21 syndrome.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Comments


Do you have more to add? Sign in to share your linguistic knowledge or observation.

Connect with Facebook