noun

floodplain

floodplain

Many ancient cities were built on fertile floodplains.

Many ancient cities were built on fertile floodplains.

((a floodplain)) an area of flat land alongside a river that is covered by water when the river floods Many ancient cities were built on fertile floodplains.

Synonyms: river plain, delta, bottomland

A compound of 'flood' and 'plain'. A plain area of land that is liable to flood.

Think of a plain, flat area of land next to a river that is designed to flood.

This page is designed for learning support. Please use it as a learning reference, not as a formal reference.