noun (n)

• (virology) ultramicroscopic infectious agent that replicates itself only within cells of living hosts; many are pathogenic; a piece of nucleic acid (DNA or RNA) wrapped in a thin coat of protein

  (virologi) ultramicroscopic menular agen itu bereplikasi sendiri hanya dalam sel hidup hos; banyak pathogenic; sepotong nucleic asam (dna atau rna) terbungkus tipis mantel protein

  source: wordnet30
• a harmful or corrupting agency

  atau meracuni agensi yang berbahaya

  Example:
  Bigotry is a virus that must not be allowed to spread.
  The virus of jealousy is latent in everyone.
  

  source: wordnet30
• a software program capable of reproducing itself and usually capable of causing great harm to files or other programs on the same computer

  perisian program mampu meneruskan dirinya dan biasanya mampu menyebabkan kerugian besar kepada fail atau lain dalam satu program komputer

  Example:
  A true virus cannot spread to another computer without human assistance.
  

  Synonym:
  computer virus
  

  source: wordnet30
• Contagious or poisonous matter, as of specific ulcers, the bite of snakes, etc.; -- applied to organic poisons.

  atau masalah menular beracun, saat bisul spesifik, gigitan ular, dll. ; - - diterapkan ke organik racun.

  source: webster1913