noun, plural im·mu·ni·ties.

Nearby words

  1. immune serum globulin,
  2. immune surveillance,
  3. immune system,
  4. immune thrombocytopenic purpura,
  5. immunifacient,
  6. immunity bath,
  7. immunization,
  8. immunize,
  9. immuno-,
  10. immunoadjuvant

Origin of immunity

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

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


Related formshy·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 confusedimmunity impunity Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for hyperimmunity


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

Word Origin and History for hyperimmunity



late 14c., "exempt from service or obligation," from Old French immunité and directly from Latin immunitatem (nominative immunitas) "exemption from performing public service or charge," from immunis "exempt, free," from assimilated form of in- "not, opposite of" (see in- (1)) + munis "performing services" (cf. municipal), from PIE *moi-n-es-, suffixed form of root *mei- "to change" (see mutable). Medical sense "protection from disease" is 1879, from French or German.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for hyperimmunity




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 hyperimmunity



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 hyperimmunity


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.