delta

noun

1. a low triangular area of alluvial deposits where a river divides before entering a larger body of water

   noun.object

   Examples

   The Mississippi River delta.

   The Nile delta.

   Source: WordNet 3.0

2. an object shaped like an equilateral triangle

   noun.shape

   Source: WordNet 3.0

3. the 4th letter of the Greek alphabet

   noun.communication

   Source: WordNet 3.0

4. A tract of land shaped like the letter delta (&DELTA;), especially when the land is alluvial and inclosed between two or more mouths of a river; as, the <i>delta</i> of the Ganges, of the Nile, or of the Mississippi.

   noun

   Source: webster1913

5. The fourth letter of the Greek alphabet (&DELTA; &delta;), answering to <u>D</u>.

   noun

   Source: webster1913