| drainage basin n. An area drained by a river system. |
drainage basin, area
n
(Earth Sciences / Physical Geography) another name for catchment area
drainage basin (dr  n j) An area drained by a river system. A drainage basin includes all areas that gather precipitation water and direct it to a particular stream, stream system, lake, or other body of standing water. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  drainage basin - the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet; "flood control in the Missouri basin"detention basin - a storage site (such as a small reservoir) that delays the flow of water downstream retention basin - a storage site similar to a detention basin but the water in storage is permanently obstructed from flowing downstream geographic area, geographic region, geographical area, geographical region - a demarcated area of the Earth |
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