This is the 9030th most frequent Japanese word.
浮上
"浮上" means "surfacing" or "rising to the surface."
The term '浮上' here is used metaphorically to describe an issue 'surfacing' or 'coming up' suddenly, implying that it was previously hidden or unnoticed.
この問題が突然浮上した。
This issue suddenly surfaced.
'浮上' in this context means 'bringing something up,' in this case, an idea during a meeting, conveying the act of presenting or revealing.
彼が会議で重要なアイデアを浮上させた。
He brought up an important idea during the meeting.
'浮上' is used literally to describe the act of the submarine surfacing from underwater to the surface.