IPA: /ɪnˈtɜːrdʒɛktər/
KK: /ɪnˈtɜrˌdʒɛktər/
A person who interrupts a conversation or discussion by adding their own comments or remarks.
During the meeting, the interjector often interrupted others with his opinions.
Interjector → It is formed from "inter-" (meaning between) and "jacere" (meaning to throw). The word describes someone who throws in remarks or comments between conversations or discussions.
Think of someone 'throwing in' comments 'between' discussions — that's what an interjector does.