1
to be soaked in;to be flooded;to be submerged
2
to be immersed in (joy, memories, alcohol, etc.);to give oneself over to;to bask in
私はその場の幸福な雰囲気に浸っていた。
I was immersed in the happy atmosphere of the occasion.
Other forms
漬る 【ひたる】 (rarely used kanji form)