Jisho

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Noun
1. (river) delta
Wikipedia definition
2. River deltaA delta is a landform that is formed at the mouth of a river, where that river flows into an ocean, sea, estuary, lake, or reservoir. Deltas are formed from the deposition of the sediment carried by the river as the flow leaves the mouth of the river. Over long periods of time, this deposition builds the characteristic geographic pattern of a river delta. Contrary to popular belief, the term delta was not coined by Herodotus.
Read “River delta” on English Wikipedia
Read “三角州” on Japanese Wikipedia
Read “River delta” on DBpedia
Other forms
三角洲 【さんかくす】

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