noun
severe intellectual disability
Formal term used in medical, educational, and social welfare settings. Refers to a significant limitation in intellectual functioning and adaptive behavior.
重度知的障害のある子どもへの支援が重要です。
Support for children with severe intellectual disabilities is important.
この施設は重度知的障害者を対象としています。
This facility is intended for people with severe intellectual disabilities.
Compound of 重度 (severe) + 知的 (intellectual) + 障害 (disability). The term follows standard medical and welfare terminology in Japan.