Synonyms for drainage-area

1. drainage area (n.)

the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet

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2. drainage (n.)

emptying something accomplished by allowing liquid to run out of it

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4. area (n.)

a subject of study

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8. area (n.)

the extent of a 2-dimensional surface enclosed within a boundary

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