Go to MSN Homeencarta®
Dictionary
Find
in
Dictionary
Thesaurus
Translations
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Click to move up the list of words
activated alumina
activated carbon
activated sludge
activation energy
active
active asset
active cell
active duty
active immunity
active-lifestyle wagon
active list
active listening
active market
active-matrix display
active packaging
active participation
active portfolio strategy
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

active immunity
ac·tive im·mu·ni·ty


noun 
Definition:
 
immunity produced by exposure to antigens: immunity generated by the production of antibodies by the body when it is exposed to antigens
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
Advertisement
© 2009 Microsoft