eruption

US /ɪˈrʌp.ʃən/
UK /ɪˈrʌp.ʃən/
"eruption" picture
1.

an act or instance of erupting

:
The volcanic eruption caused widespread ashfall.
There was an eruption of applause after her performance.
2.

a skin rash or other blemish breaking out on the surface of the body

:
The doctor diagnosed a skin eruption caused by an allergic reaction.
She developed a strange eruption on her arm.