delta What is the Definition of delta?Noun:a low triangular area of alluvial deposits where a river divides before entering a larger body of wateran object shaped like an equilateral trianglethe 4th letter of the Greek alphabet Other meanings of delta (synonyms, cognates). ENRU delta дельта Frequently viewed: definition of factorysingle meaningnotation meaningdefinition of inputultimately definitiontoday meaninggenerally in a sentencestale meaningtried meaningremind in a sentencealphabet meaningspecialist definition A B C D E F G H I J K L M N O P Q R S T U V W X Y Z