delta
['dɛltə]
n. 洲, 希腊母

[医] δ(希腊文母), 丁种, , 形

[] 洲

1. There are fertile fields in the Nile Delta.
   河洲土沃。
2. Sediment deposited by flowing water, as in a riverbed, flood plain, or delta.
   冲积层河床、洪淹洲流淤积沉积层
3. A section of the Meuse River flowing westward through the southern Netherlands to a joint delta with the Rhine River.
   斯河默兹河，西流荷兰郊莱茵河汇而形片冲积洲

delta
[ noun ]

1. a low triangular area of alluvial deposits where a river divides before entering a larger body of water

<noun.object>
the Mississippi River delta
the Nile delta

2. an object shaped like an equilateral triangle

<noun.shape>

3. the 4th letter of the Greek alphabet

<noun.communication>

Delta \Del"ta\, n.; pl. {Deltas}. [Gr. de`lta, the name of the
fourth letter of the Greek alphabet (the capital form of
which is [Delta], Eng. D), from the Ph[oe]nician name of the
corresponding letter. The Greeks called the alluvial deposit
at the mouth of the Nile, from its shape, the Delta of the
Nile.]
1. The fourth letter of the Greek alphabet ([Delta] [delta]),
corresponding to {D}. Hence, an object having the shape of
the capital [Delta].
[Webster 1913 Suppl.]

2. A tract of land shaped like the letter delta ([Delta]),
especially when the land is alluvial and inclosed between
two or more mouths of a river; as, the delta of the
Ganges, of the Nile, or of the Mississippi.

3. (Elec.) The closed figure produced by connecting three
coils or circuits successively, end for end, esp. in a
three-phase system; -- often used attributively, as delta
winding, delta connection (which see), etc.
[Webster 1913 Suppl.]