rat louse

noun

Medical Definition of rat louse

: a sucking louse (Polyplax spinulosa) that is a widely distributed parasite of rats and transmits murine typhus from rat to rat

Learn More About rat louse

Cite this Entry

“Rat louse.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/rat%20louse. Accessed 17 Jun. 2021.

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