delta etymology

Etymology:

• Greek: δέλτα (delta)

Meaning:

• The fourth letter of the Greek alphabet (Δ, δ)
• A triangular-shaped landform at the mouth of a river where sediment deposits have built up

Origin:

The word "delta" comes from the Greek letter delta, which is shaped like a triangle. The first known use of the term in the context of a river delta was by the Greek historian Herodotus in the 5th century BC. Herodotus observed the triangular-shaped landform at the mouth of the Nile River and named it after the Greek letter because of its similar shape.

Over time, the term "delta" was adopted into other languages, including Latin, French, and English, to refer to any similar landform formed at the mouth of a river.

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