From Longman Dictionary of Contemporary Englishinterjectionin‧ter‧jec‧tion /ˌɪntəˈdʒekʃən $ -ər-/ noun 1 [countable]SLG technical a word or phrase used to express a strong feeling such as shock, pain, or pleasure SYN exclamation2 [countable, uncountable]INTERRUPT formal an interruption, or the act of interrupting