Definition of vaccine in English:
1A substance used to stimulate the production of antibodies and provide immunity against one or several diseases, prepared from the causative agent of a disease, its products, or a synthetic substitute, treated to act as an antigen without inducing the disease: there is no vaccine against HIV infection
More example sentences
- Immunisation with the influenza vaccine is recommended for asthmatic people.
- They have proved that a vaccine which immunises against the disease is more likely to work in humans.
- These children show few adverse reactions to routine vaccinations, including live vaccines.
1.1 Computing A program designed to detect computer viruses and inactivate them.
- A vaccine should consume fewer network resources than the virus against which it provides immunity.
- I have been working on the computer vaccine for five years.
- Do you have problem with your computer vaccine when it's service period is over?
late 18th century: from Latin vaccinus, from vacca 'cow' (because of the early use of the cowpox virus against smallpox).
Definition of vaccine in:
- British & World English dictionary