rhi·​no·​pneu·​mo·​ni·​tis ˌrī-nō-ˌn(y)ü-mə-ˈnīt-əs How to pronounce rhinopneumonitis (audio)
: an acute febrile respiratory disease of horses that is caused by two herpesviruses of the genus Varicellovirus (species Equid herpesvirus 1 and Equid herpesvirus 4), that is characterized especially by rhinopharyngitis and tracheobronchitis, and that sometimes causes abortion in pregnant mares

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“Rhinopneumonitis.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/rhinopneumonitis. Accessed 28 Feb. 2024.

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