Vaccine

vak-sēn

Meaning & Definition

noun

A 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.

The flu vaccine is recommended for all individuals over six months of age.

An antigenic preparation used to stimulate the immune response and confer protection against a specific disease.

Many countries are implementing free vaccination programs to combat infectious diseases.

The act of administering a vaccine to an individual.

She received her COVID-19 vaccine at the local clinic.

A preparation containing weakened or killed pathogens or antigens that is administered to induce immunity.

After the vaccine was developed, clinical trials were conducted to ensure its safety.

Etymology

From Latin 'vacca' meaning cow, relating to the use of cowpox material in the first vaccine by Edward Jenner.

Common Phrases and Expressions

vaccine rollout

The process by which a vaccine is distributed and made available to the public.

vaccine hesitant

Referring to individuals who are uncertain or skeptical about receiving vaccines.

fully vaccinated

Having received all necessary doses of a vaccine according to the recommended schedule.

Related Words

immunity

The ability of an organism to resist infection or disease.

antigen

A substance that induces an immune response.

pathogen

An organism that causes disease.

Slang Meanings

vax

I just got my vax last week.

jab

He's getting his jab tomorrow.