delta

delta [del′tə]

n.

[L < Gr delta, of Sem orig., as in Heb dāleth, 4th letter of the alphabet, lit., door]

1. the fourth letter of the Greek alphabet (Δ, δ)

2. something in the shape of a delta (Δ); specif., a tract of flat land, usually triangular, formed by deposits of soil and sand at the mouth of a large river

adj.

1. [usually D-] of, in, or from the Delta [Delta blues]

2. Chem. see ALPHA

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the Delta

low-lying region in NW Miss., extending eastward from the Mississippi River

deltaic [del tā′ik]

adj.