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: a pale brown Asian macaque (Macaca mulatta) often used in medical research
called also rhesus, rhesus macaque
Examples of rhesus monkey in a Sentence
Recent Examples on the Web
Wardle thinks Hamilton’s hypothesis makes sense and has co-authored a study showing that rhesus monkeys also experience pareidolia—the first evidence of the phenomenon in a nonhuman species.
—Byhannah Richter, science.org, 4 Oct. 2024
Researchers in China have successfully cloned the first rhesus monkey, a species widely used in medical research because of its physiological similarity to humans.
—Sorcha Bradley, The Week Uk, theweek, 23 Jan. 2024
Amit Dave / Reuters To protect public areas from rhesus monkeys, which are a nuisance and often attack people, officials have put up life-size cutouts of langurs, a bigger primate that the rhesus monkeys find intimidating.
—Mithil Aggarwal, NBC News, 8 Sep. 2023
Military personnel started comparing the adjuvant combinations on rhesus monkeys at an Army facility in Thailand and ran clinical trials that tested the most promising pairs in humans and devised dosing strategies.
—Anna Maria Barry-Jester, ProPublica, 4 Oct. 2023
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Word History
Etymology
New Latin Rhesus, genus of monkeys, from Latin, a mythical king of Thrace, from Greek Rhēsos
First Known Use
1829, in the meaning defined above
Dictionary Entries Near rhesus monkey
Cite this Entry
“Rhesus monkey.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rhesus%20monkey. Accessed 5 Nov. 2024.
Kids Definition
rhesus monkey
noun
rhe·sus monkey
ˌrē-səs-
: a pale brown Asian monkey often used in medical research
Medical Definition
rhesus monkey
noun
: a pale brown Asian monkey of the genus Macaca (M. mulatta) often used in medical research
More from Merriam-Webster on rhesus monkey
Britannica.com: Encyclopedia article about rhesus monkey
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