以降 (Ikou) is a Japanese noun meaning “on and after, from ... onward, since”.
Meanings
- noun, adverbon and after; from ... onward; since
Examples
それ以降彼は辛い一生を送った。
He led a hard life after that.
６時以降ならいつでも結構です。
Any time will do so long as it is after six.
梅雨入りは来週以降になりそうだ。
It looks like the rainy season is going to start after next week.
Sentences from Tatoeba (CC BY 2.0 FR).