noun
US/ɪˌnɑː.kjəˈleɪ.ʃən/
UK/ɪˌnɒk.jʊˈleɪ.ʃən/
Putting a weak form of a disease into the body so that it can fight that disease later.
In context
The nurse explained that the inoculation might cause a sore arm for a day.
Short entry. Full notes coming.