A medicine that counteracts venom, an antidote to biological poisons from venomous animals such as snakes and spiders.
A substance given to stimulate a body's production of antibodies and provide immunity against a disease without causing the disease itself in the treatment, prepared from the agent that causes the disease (or a derivative of it; or a related, also effective, but safer disease), or a synthetic substitute; also, a dose of such a substance.
Something defensive or protective in nature, like a vaccine (sense 1.1).
Material taken from cowpox pustules used for vaccination against smallpox.
A software program which protects computers against, or detects and neutralizes, computer viruses and other types of malware; an antivirus.
The process of vaccination; immunization, inoculation.
Of, pertaining to, caused by, or characteristic of cowpox.
Of or pertaining to cowpox as a source of material for vaccination against smallpox; also, of or pertaining to such material used for vaccination.