Pneumonyssus

noun
Pneu·​mo·​nys·​sus | \ ˌn(y)ü-mə-ˈnis-əs How to pronounce Pneumonyssus (audio) \

Medical Definition of Pneumonyssus

: 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

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not constant or steady

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