minimal brain dysfunction

noun

: attention deficit hyperactivity disorder

Note: Minimal brain dysfunction is one of several former names originally used to describe attention deficit hyperactivity disorder.

Examples of minimal brain dysfunction in a Sentence

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Other terms would follow, like minimal brain dysfunction. Ryan D'agostino, Esquire, 27 Mar. 2014

Word History

First Known Use

1966, in the meaning defined above

Time Traveler
The first known use of minimal brain dysfunction was in 1966

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Cite this Entry

“Minimal brain dysfunction.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/minimal%20brain%20dysfunction. Accessed 11 Nov. 2025.

Medical Definition

minimal brain dysfunction

noun
dated
: attention deficit hyperactivity disorder
Formerly called hyperactivity … or minimal brain dysfunction, ADHD first was described 100 years ago as a childhood disorder found mainly in boys. Revisions in the diagnostic construct have been made a number of times over the past century. The most important shift occurred in the 1970s, when the concept of attention dysfunction was introduced as the central defining feature, and the disorder was renamed accordingly.Larry J. Seidman et al., Psychiatric Clinics of North America

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