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catchment

catch·ment [ káchmənt, kéchmənt ] (plural catch·ments)


noun 
Definition:
 
1. rainwater receptacle: a structure, reservoir, or container for collecting rainwater

2. collected rainwater: the rainwater that collects in a specific container or area

3. collecting of rainwater: the collecting or catching of rainwater especially over an area of land surrounding a river or lake

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