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Orbivirus

(ôrbə-vī′rəs)
n.
  1. A genus of reoviruses that includes the Colorado tick fever virus of humans and certain viruses formerly included with the arboviruses.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.