immunity in an organism resulting from its own production of antibody or lymphocytes.
How Do You Change Passive Voice Into Active Voice?In active voice, the subject performs the action of the verb. In passive voice, the subject receives the action of the verb. If you feel like you need a little more than that, keep reading.
Phil LesterRead more in this article about some frequently asked questions and fun facts related to our definitions.
- active congestion,
- active duty,
- active galactic nucleus,
- active galaxy,
- active hyperemia,
- active layer,
- active list,
- active margin,
- active mass,
- active matrix
Compare passive immunity.
Origin of active immunity
First recorded in 1910–15
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Immunity resulting from the development of antibodies in response to the presence of an antigen, as from vaccination or exposure to an infectious disease.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
See under acquired immunity.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.