Definition of bluetongue
: a virus disease chiefly of sheep that is marked by hyperemia, cyanosis, and by swelling and sloughing of the mucous membranes especially about the mouth and tongue and is caused by a reovirus (species Bluetongue virus of the genus Orbivirus)
First Known Use of bluetongue
Medical Definition of bluetongue
: a noncontagious virus disease especially of sheep that is caused by a reovirus of the genus Orbivirus (species Bluetongue virus) transmitted by biting flies of the genus Culicoides and that is characterized by hyperemia and cyanosis and by swelling and sloughing of the mucous membranes especially about the mouth and tongue—called also soremuzzle
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