Poxviridae

[pŏks-vîrĭ-dē′]
n.
  1. A family of large complex DNA viruses, including the vaccinia and variola viruses, that are pathogenic to humans and animals and have an affinity for skin tissue.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.