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'
an object shaped like an equilateral triangle
the 4th letter of the Greek alphabet
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'
an object shaped like an equilateral triangle
the 4th letter of the Greek alphabet