blue comb

noun

variants or less commonly blue comb disease
: an acute infectious disease of domestic turkeys that is caused by a coronavirus (species Avian coronavirus of the genus Gammacoronavirus) and is characterized by lack of appetite, weight loss, and wet droppings

called also mud fever

Word History

Etymology

so called from its discoloring effect on the combs of fowls

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Cite this Entry

“Blue comb.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blue%20comb. Accessed 6 Nov. 2025.

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