delta

n. 4th letter of the Greek alphabet; triangular section of land at the mouth of a river

Delta most commonly refers to:Delta (letter), the letter Δ or δ in the Greek alphabet, also used as a mathematical symbolRiver delta, a landform at the mouth of a river
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Noun
1. a low triangular area where a river divides before entering a larger body of water
(hypernym) geological formation, formation
2. the 4th letter of the Greek alphabet
(hypernym) letter, letter of the alphabet, alphabetic character
(member-holonym) Greek alphabet

n. delta, 4th letter of the Greek alphabet; triangular section of land at the mouth of a river

n. delta, 4th letter of the Greek alphabet; triangular section of land at the mouth of a river