delta

n 1 the fourth letter of the Greek alphabet (}, ) 希腊字母表的第四个字母（}, ）. 2 triangular area of alluvial land at a river's mouth, enclosed or crossed by branches of the river （河口的）三角洲: the Nile Delta 尼罗河三角洲.

delineate, delineation, delinquency, delinquent, deliquesce, deliquescent, delirious, deliriously, delirium, delirium tremens, deliver, deliverance, deliverer, delivery, delivery note, delivery van (US delivery truck), dell, delouse, Delphic, delphinium, delta wing aircraft, delude, deluge, delusion, delusive, delusively, delve, Dem, dem(o)-, demagnetization, -isation, demagnetize, demagnetise, demagogic, demagogue, demagogy, demand, demand bill, demand loan, demand for, demand to do, demanding, demarcate,