virus

Virus has 2 syllables: vi · rus.

noun. A software program capable of reproducing itself and usually capable of causing great harm to files or other programs on the same computer.

noun. A harmful or corrupting agency.

noun. (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.