Nosopsyllus
noun
Nos·o·psyl·lus
ˌnäs-ə-ˈsil-əs 
: a genus of fleas that includes the northern rat flea (N. fasciatus)
Cite this Entry
“Nosopsyllus.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Nosopsyllus. Accessed 2 Jul. 2025.
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