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vi·rus  audio  (vrs) KEY 

NOUN:
pl. vi·rus·es
    1. Any of various simple submicroscopic parasites of plants, animals, and bacteria that often cause disease and that consist essentially of a core of RNA or DNA surrounded by a protein coat. Unable to replicate without a host cell, viruses are typically not considered living organisms.
    2. A disease caused by a virus.
  2. Something that poisons one's soul or mind: the pernicious virus of racism.
  3. Computer Science A computer virus.
ETYMOLOGY:
Latin vrus, poison


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