delta /'delta; 'delta/ n Greek letter d, → App 4; land (with alluvial deposits) in the shape of a capital ~ (a) at the mouth of a river between two or more branches: 希膻字母的第四個(gè)字母 (A, 5) (參看附錄四); (在河口由數(shù)條支流沖積成的)三角洲： the Nile Z ) ~，尼羅河三角洲;. ~- 'winged, (of aircraft) having ~-shaped wings. (指飛機(jī))有三角諜的。