A shallow lake in the north-western Netherlands, created in 1932 by the building of a dam across the entrance to the old Zuider Zee. Large areas have since been reclaimed as polders.
Definition of IJsselmeer in US English:
IJsselmeer
proper nounˈīsəlˌmer
A shallow lake in the northwestern Netherlands, created in 1932 by the building of a dam across the entrance to the old Zuider Zee. Large areas have since been reclaimed as polders.