Wiktionary:Word of the day/2023/January 26

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vaccine adj

(historical) (medicine) Of, pertaining to, caused by, or characteristic of cowpox. (by extension, immunology) Of or pertaining to cowpox as a source of material for vaccination against smallpox; also, of or pertaining to such material used for vaccination. (archaic) Of, pertaining to, or derived from cattle or cows. vaccine n (immunology) 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. The process of vaccination; immunization, inoculation. (historical) Material taken from cowpox pustules used for vaccination against smallpox. (also medicine, obsolete) The disease cowpox, especially as a source of material for vaccination against smallpox. (figuratively) Something defensive or protective in nature, like a vaccine (sense 1.1). (computing) A software program which protects computers against, or detects and neutralizes, computer viruses and other types of malware; an antivirus. vaccine v (transitive, archaic) Synonym of vaccinate (“to treat (a person or an animal) with a vaccine to produce immunity against a disease”) The British physician and scientist Edward Jenner, who pioneered the concept of vaccines and created the world’s first vaccine—the smallpox vaccine, died on this day 200 years ago in 1823.

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