Down's syndrome; mongolism (obsolete)
Obsolete and offensive term for Down's syndrome. Modern Japanese uses ダウン症候群 or ダウン症. This word is no longer used in medical or everyday contexts.
See also: ダウン症候群
'Mongolism' is now considered a discriminatory expression and is no longer used.
From 蒙古 (Mongolia) + 症 (syndrome), based on the outdated and now-discredited racial classification of Down's syndrome. The term is obsolete and considered offensive.