onomatopoeia
nounNAmE//ˌɑnəˌmæt̮əˈpiə//, NAmE//ˌɑnəˌmɑt̮əˈpiə//
[uncountable] (technology)NAmE//ˌɑnəˌmæt̮əˈpiɪk//, NAmE//ˌɑnəˌmɑt̮əˈpiɪk//
adjective “Bang” and “pop” are onomatopoeic words.See onomatopoeia in the Oxford Advanced Learner's DictionaryCheck pronunciation: onomatopoeia