A split or rupture into two or more parts; the breaking up of organizations or opinions. Often implies a sharp or contentious division.
党内で意見が分裂して新しい派閥ができた。
Opinions split within the party and a new faction was formed.
細胞が分裂して数を増やす。
Cells divide and increase in number.
チームは内部分裂により解散した。
The team disbanded due to internal splits.