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visna

[vis-nuh] /ˈvɪs nə/
noun
1.
Veterinary Pathology. a disease of sheep, caused by a quickly mutating lentivirus, and affecting the central nervous system.
Origin of visna
1955-1960
1955-60; < Old Norse visna to wither
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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