Learn how to say Interjection correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word interjection:
an abrupt remark, especially as an aside or interruption:
barracking and interjections from the protesters
an exclamation, especially as a part of speech (e.g. ah!, dear me!).
late Middle English: via Old French from Latin interjectio(n-), from the verb interjicere (see interject)