a low triangular area of alluvial deposits where a river divides before entering a larger body of water
The Mississippi River delta. The Nile delta.
source: WordNet 3.0
an object shaped like an equilateral triangle
source: WordNet 3.0
the 4th letter of the Greek alphabet
source: WordNet 3.0
A tract of land shaped like the letter delta (Δ), especially when the land is alluvial and inclosed between two or more mouths of a river; as, the delta of the Ganges, of the Nile, or of the Mississippi.
source: Webster 1913
The fourth letter of the Greek alphabet (Δ δ), answering to D.
