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immune Line breaks: im¦mune
Pronunciation: /ɪˈmjuːn/

Definition of immune in English:


1Resistant to a particular infection or toxin owing to the presence of specific antibodies or sensitized white blood cells: they were naturally immune to hepatitis B
More example sentences
  • People whose immune systems have fought the infection will then be immune to TB.
  • Contracting the disease once does not render a person immune to future infections, which is why getting routine boosters is so important.
  • In this way, vaccinations allow you to become immune to an infection without having the illness first.
1.1 [attributive] Biology Relating to immune resistance.
Example sentences
  • Rejection is the term applied to the natural immune response to foreign tissue.
  • Vitamin C is necessary for collagen formation, proper immune function, and as a tissue antioxidant.
  • Several studies have been undertaken using this natural immune modulator.
2Protected or exempt, especially from an obligation or the effects of something: they are immune from legal action
More example sentences
  • Nevertheless, if the worst happened, we would not be immune from the effects of such an attack.
  • Royalty are not immune from their effects, as we have seen all too clearly.
  • Commercial free speech is protected, but it is not immune from regulation.
resistant, not subject, not liable, unsusceptible, not vulnerable, not open, not exposed;
protected from, safe from, secure against, not in danger of, exempt from, clear of, free from, unaffected by, proof against;
informal let off
2.1 [predicative] Not affected or influenced by something: no one is immune to his immense charm
More example sentences
  • So maybe I'm not completely immune to those seasonal influences either…
  • We could see their love and it rubbed off on us - or at least it rubbed off on those not so opposed to the man as to be immune to such influence.
  • At the same time, the hype notwithstanding, large parts of the country remain immune to media influence.


Late Middle English (in the sense 'free from (a liability')): from Latin immunis 'exempt from public service or charge', from in- 'not' + munis 'ready for service'. Senses relating to physiological resistance date from the late 19th century.

  • Latin immunis ‘exempt from public service’ (literally ‘not ready for service’) is the source of immune and immunity. The early sense of immune was ‘free from (a liability)’ and this general meaning was common from the 15th to 17th centuries. The sense ‘able to resist infection’ dates from the late 19th century.

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