perosis
noun
pe·ro·sis
| \ pə-ˈrō-səs
\
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plural peroses\ -ˌsēz
\
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Medical Definition of perosis
: a disorder of poultry that is characterized by leg deformity and is caused by a deficiency of vitamins (as biotin or choline) or minerals (as manganese) in the diet
— called also hock disease, slipped tendon