səbˈsīd ə n(t)s, ˈsəbsədən- noun
( -s )
Etymology: Latin subsidentia, from subsident-, subsidens (present participle of subsidere to subside) + -ia
1. : something (as a sediment in a liquid) that has subsided
2. : the act or process of subsiding : a falling, lowering, or flattening out
the subsidence of waves after a storm
his anger underwent a quick subsidence