English · Body & Health
immune system
/ɪˈmjuːn ˌsɪs.təm/
[/ɪˈmjuːn ˌsɪs.təm/]
body's defence network
Advancednoun
Definition
The system in the body that fights off infections and disease.
Example
A healthy diet and good sleep help keep the immune system strong.
A healthy diet and good sleep help keep the immune system strong.
Etymology
From Latin 'immunis' (exempt) and 'system'.
How & Where It’s Used
Central to talk of illness, vaccines, and overall health.