All coastal plain synonyms
coast·al plain
C c noun coastal plain
- alluvial plain — a level or gently sloping surface formed of sediments laid down by streams, generally during flooding.
- delta — A delta is an area of low, flat land shaped like a triangle, where a river splits and spreads out into several branches before entering the sea.
- floodplain — a nearly flat plain along the course of a stream or river that is naturally subject to flooding.