[ ih-myoo-ni-tee ]
/ ɪˈmyu nɪ ti /

noun, plural im·mu·ni·ties.

Origin of immunity

1350–1400; Middle English immunite < Latin immūnitās. See immune, -ity


4 See exemption.
5 franchise, license, liberty, prerogative.

Related forms

hy·per·im·mu·ni·ty, nounnon·im·mu·ni·ty, noun, plural non·im·mu·ni·ties.self-im·mu·ni·ty, noun, plural self·-im·mu·ni·ties.

Can be confused

immunity impunity Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for immunity

British Dictionary definitions for immunity


/ (ɪˈmjuːnɪtɪ) /

noun plural -ties

the ability of an organism to resist disease, either through the activities of specialized blood cells or antibodies produced by them in response to natural exposure or inoculation (active immunity) or by the injection of antiserum or the transfer of antibodies from a mother to her baby via the placenta or breast milk (passive immunity)See also acquired immunity, natural immunity
freedom from obligation or duty, esp exemption from tax, duty, legal liability, etc
any special privilege granting immunity
the exemption of ecclesiastical persons or property from various civil obligations or liabilities
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for immunity


[ ĭ-myōōnĭ-tē ]


The quality or condition of being immune.
Inherited, acquired, or induced resistance to infection by a specific pathogen.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for immunity


[ ĭ-myōōnĭ-tē ]

The protection of the body from a disease caused by an infectious agent, such as a bacterium or virus. Immunity may be natural (that is, inherited) or acquired. See also acquired immunity.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Culture definitions for immunity


The ability of the body to resist or fight off infection and disease.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.