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definitive host
noun
: the host in which the sexual reproduction of a parasite takes place compare intermediate host sense 1
Examples of definitive host in a Sentence
Recent Examples on the Web
Dogs are considered the definitive host for heartworms, which means that the parasite can grow to maturity and reproduce all within the host.
—Stephen C. George, Discover Magazine, 24 July 2023
Domestic cats and other felines are, however, the definitive host for the parasite’s reproductive stage.
—Rebecca Kreston, Discover Magazine, 29 Apr. 2011
Ants infected by a roundworm called Myrmeconema neotropicumturns turn from black to red and strike suicidal berry poses that attract hungry birds, the worm’s definitive host.
—Joe Pappalardo, Popular Mechanics, 23 Sep. 2019
Dogs and other carnivores are the definitive hosts, and mosquitoes serve as vectors.
—Marci Robin, Allure, 22 June 2018
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Word History
First Known Use
1866, in the meaning defined above
Dictionary Entries Near definitive host
Cite this Entry
“Definitive host.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/definitive%20host. Accessed 22 Dec. 2024.
Medical Definition
definitive host
noun
: the host in which the sexual reproduction of a parasite takes place compare intermediate host sense 1
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