Or·​ni·​thon·​ys·​sus ˌȯr-nə-ˈthän-ə-səs How to pronounce Ornithonyssus (audio) -thə-ˈnis-əs How to pronounce Ornithonyssus (audio)
: a genus of mites (family Macronyssidae) that are parasitic on vertebrates and include the rat mite (O. bacoti) and two serious pests (O. bursa and O. sylviarum) of domestic fowl

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“Ornithonyssus.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Ornithonyssus. Accessed 22 Jun. 2024.

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