Pneumonyssus
noun
Pneu·mo·nys·sus
ˌn(y)ü-mə-ˈnis-əs 
in former classifications
: a genus of mites (family Halarachnidae) that live in the air passages of mammals and include one (P. caninum) found in dogs and another (P. simicola) found in monkeys
Cite this Entry
“Pneumonyssus.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Pneumonyssus. Accessed 26 Nov. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share