hyperreactor

noun

hy·​per·​re·​ac·​tor ˌhī-pər-rē-ˈak-tər How to pronounce hyperreactor (audio)
variants or less commonly hyper-reactor
plural hyperreactors also hyper-reactors
: a person who is abnormally sensitive (as to a stimulus or a drug) : one who is hyperreactive
spiking of blood pressure in hyperreactors following exposure to cold

Word History

First Known Use

1938, in the meaning defined above

Time Traveler
The first known use of hyperreactor was in 1938

Dictionary Entries Near hyperreactor

Cite this Entry

“Hyperreactor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyperreactor. Accessed 22 Apr. 2024.

Medical Definition

hyperreactor

noun
hy·​per·​re·​ac·​tor -rē-ˈak-tər How to pronounce hyperreactor (audio)
variants also hyper-reactor
: a person who is abnormally sensitive (as to a stimulus or a drug) : one who is hyperreactive
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