intellectual disability

noun

: mild to severe impairment in intellectual ability equivalent to an IQ of 70 to 75 or below that is accompanied by significant limitations in social, practical, and conceptual skills (as in interpersonal communication, reasoning, or self-care) necessary for independent daily functioning and that has an onset before age 18

Note: The term intellectual disability is now preferred over mental retardation in medical, educational, and regulatory contexts, as well as in general use. The term mental retardation is increasingly considered offensive, though it was the dominant term into the second decade of the current century.

Examples of intellectual disability in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In June, the American Academy of Pediatrics updated its guidance to recommend that pediatricians order exome or genome sequencing as the first-line test for patients with global developmental delays or intellectual disabilities. Brad Quick, CNBC, 10 Feb. 2026 Maye has taken over the reins from Brady as an ambassador for Best Buddies, an international organization that supports countless individuals with intellectual disabilities across New England. Lance Reynolds, Boston Herald, 8 Feb. 2026 Our son Michael, a young man with some significant intellectual disabilities, is a huge Boston Bruins fan. Chicago Tribune, 7 Feb. 2026 Their data included over 262,000 children assessed for autism, over 335,000 for ADHD and over 406,000 for an intellectual disability. Kimberlee Speakman, PEOPLE, 18 Jan. 2026 See All Example Sentences for intellectual disability

Word History

First Known Use

1809, in the meaning defined above

Time Traveler
The first known use of intellectual disability was in 1809

Browse Nearby Words

Cite this Entry

“Intellectual disability.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/intellectual%20disability. Accessed 15 Feb. 2026.

Kids Definition

intellectual disability

noun
: mild to severe impairment in intellectual ability accompanied by significant limitations in skills (as in communication, reasoning, or self-care) necessary for independent daily functioning

Medical Definition

intellectual disability

noun
: mild to severe impairment in intellectual ability equivalent to an IQ of 70 to 75 or below that is accompanied by significant limitations in social, practical, and conceptual skills (as in interpersonal communication, reasoning, or self-care) necessary for independent daily functioning and that has an onset before age 18

Note: The term intellectual disability is now preferred over mental retardation in medical, educational, and regulatory contexts, as well as in general use. The term mental retardation is increasingly considered offensive, though it was the dominant term into the second decade of the current century.

… Rosa's Law, which changed references in federal law from "mental retardation" to "intellectual disability" and references to a mentally retarded individual to an individual with an intellectual disability.Victor R. Martinez
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster