How to sign: (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
Categories: infectious agent, infective agent, microorganism
Within this category: animal virus, arbovirus, bacteriophage, plant virus, slow virus, tumor virus
How to sign: a software program capable of reproducing itself and usually capable of causing great harm to files or other programs on the same computer
"a true virus cannot spread to another computer without human assistance";
Similiar / Same: computer virus
Categories: malevolent program