vaccine
//vækˈsiːn//
Noun
vaccineSingular
vaccinesPlural
1
A substance containing weakened, killed, or synthetic forms of a disease-causing agent, administered to stimulate the body's immune system to produce antibodies and provide immunity against that disease.
The doctor gave me a vaccine to protect against the flu.
2
A preparation used to prevent or treat a specific infectious disease by inducing an immune response.
The new vaccine protects against several strains of the flu.