hyperreactive

adjective

hy·​per·​re·​ac·​tive ˌhī-pər-rē-ˈak-tiv How to pronounce hyperreactive (audio)
variants or hyper-reactive
: having or showing abnormally high sensitivity to stimuli
Because of their association with the trauma, many victims seem to be hyperreactive to sounds and sights other children don't respond to.Kate McGraw
… production of free radicals: hyper-reactive molecules that can attack proteins, nucleic acids, or lipids that have the misfortune to be nearby.Robert Taylor
hyperreactivity noun
or hyper-reactivity
hyperreactivity of airways in asthma
sensory hyper-reactivity

Word History

First Known Use

1932, in the meaning defined above

Time Traveler
The first known use of hyperreactive was in 1932

Dictionary Entries Near hyperreactive

Cite this Entry

“Hyperreactive.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyperreactive. Accessed 22 Nov. 2024.

Medical Definition

hyperreactive

adjective
hy·​per·​re·​ac·​tive -rē-ˈak-tiv How to pronounce hyperreactive (audio)
variants also hyper-reactive
: having or showing abnormally high sensitivity to stimuli
Because of their association with the trauma, many victims seem to be hyperreactive to sounds and sights other children don't respond to.Kate McGraw, The News Journal (Wilmington, Delaware)
Interior surface cells of the bronchial passages were destroyed and the airways became hyper-reactive to outside stimuli.Harold M. Schmeck, Jr., The New York Times
hyperreactivity noun
also hyper-reactivity
plural hyperreactivities
bronchial hyperreactivity
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