1. (noun)interjection, interposition, interpolation, interpellation the action of interjecting or interposing an action or remark that interrupts Synonyms: interpolation, interjection, interpellation, insertion, intervention, ejaculation, interposition
2. (noun)interposition, intervention the act or fact of interposing one thing between or among others Synonyms: interpolation, interjection, intercession, interference, interposition, treatment, intervention, interpellation