inoculation
American-
The introduction of a serum, a vaccine, or an antigenic substance into the body of a person or an animal, especially as a means to produce or boost immunity to a specific disease.
-
The introduction of a microorganism or an agent of disease into an host organism or a growth medium.
Usage
What’s the difference between inoculation, vaccination, and immunization? In the context of medicine, the words inoculation, vaccination, and immunization are often used in overlapping ways, and for good reason—they all involve the process of introducing a substance (especially a vaccine) into a person’s body with the goal of preventing them from getting a particular disease.Vaccination is the most specific of the three terms, because it always involves introducing a vaccine, which usually consists of a small amount of a killed, weakened, or otherwise modified version of a disease (such as a virus or bacterium). While inoculation has other meanings outside the context of medicine, in modern healthcare it’s typically used interchangeably with vaccination (though it’s used less commonly).Immunization is slightly different—it refers to the process of providing immunity from a specific disease. While the goal of vaccinating someone is often to immunize them, not all vaccines provide permanent immunity. Some vaccines provide what amounts to long-term immunity, while others only lead to a temporary protection, after which the body “forgets” how to make certain antibodies. In these cases, a booster shot or dose is often required, consisting of a follow-up vaccination to boost or renew the protection gained from the earlier vaccination.Both vaccination and inoculation can refer to a shot or dose, as opposed to the process of providing or receiving such doses, as in I’m scheduled to get a vaccination on Friday. The word immunization can be used in the same way to refer to such a vaccination when it’s one that provides immunity, as in Have you received all of your immunizations?Want to learn more? Read the full breakdown of the difference between inoculate, vaccinate, and immunize.
Other Word Forms
- noninoculation noun
- postinoculation adjective
- reinoculation noun
- self-inoculation noun
Etymology
Origin of inoculation
1400–50; late Middle English < Latin inoculātiōn- (stem of inoculātiō ) an engrafting. See inoculate, -ion
Compare meaning
How does inoculation compare to similar and commonly confused words? Explore the most common comparisons:
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Differing strains of B.C.G. and varying inoculation regimens may account for inconsistent results in other studies, some experts say.
From New York Times
Experiments have shown that inoculation can protect cattle from infection, but there is no commercially available vaccine for them.
From Scientific American
Limited data on the reformulated vaccines indicate that in older adults, the shots offer additional protection against severe disease and death from Covid, although the protection wanes rapidly in the weeks after inoculation.
From New York Times
The FDA is planning this fall to move to a once-a-year coronavirus shot for most Americans — a timetable announced in January that is intended to coincide with annual flu inoculations.
From Washington Post
Global regulators expect vaccination campaigns to be conducted once a year, similar to annual flu inoculations.
From Reuters
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.