delta

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Del·ta

 (dĕl′tə)
An area of the south-central United States extending on either side of the Mississippi River from Memphis, Tennessee, to Vicksburg, Mississippi. An important cotton-producing region, it is noted for its folk culture, especially as the home of some of the earliest blues music.

click for a larger image
delta
satellite image of the
Nile River delta, Egypt

del·ta

 (dĕl′tə)
n.
1. The fourth letter of the Greek alphabet. See Table at alphabet.
2. An object shaped like a triangle.
3.
a. A usually triangular alluvial deposit at the mouth of a river.
b. A similar deposit at the mouth of a tidal inlet, caused by tidal currents.
4. Mathematics A finite increment in a variable.
adj. Chemistry
1. Being in the fourth position relative to a designated carbon atom in an organic molecule at which an atom or a group may be substituted.
2. Referring to the fourth of a group of isomers, or molecules of similar origin or properties, determined arbitrarily by those who discover or classify them. Used in combination.

[Middle English, from Latin, from Greek, of Phoenician origin; see dl in Semitic roots.]

del·ta′ic (-tā′ĭk), del′tic (-tĭk) adj.

delta

(ˈdɛltə)
n
1. (Letters of the Alphabet (Foreign)) the fourth letter in the Greek alphabet (Δ, δ), a consonant transliterated as d
2. an object resembling a capital delta in shape
3. (Physical Geography) (capital when part of name) the flat alluvial area at the mouth of some rivers where the mainstream splits up into several distributaries: the Mississippi Delta.
4. (Mathematics) maths a finite increment in a variable
[C16: via Latin from Greek, of Semitic origin; compare Hebrew dāleth]
deltaic, ˈdeltic adj

Delta

(ˈdɛltə)
n
1. (Celestial Objects) (foll by the genitive case of a specified constellation) usually the fourth brightest star in a constellation
2. (Astronautics) any of a group of US launch vehicles used to put unmanned satellites into orbit
3. (Communications & Information) communications a code word for the letter d

Delta

(ˈdɛltə)
n
(Placename) a state of Nigeria, on the Niger river delta on the Gulf of Guinea. Capital: Asaba. Pop: 4 098 391 (2006). Area: 17 698 sq km (6833 sq miles)

del•ta

(ˈdɛl tə)

n., pl. -tas.
1. the fourth letter of the Greek alphabet (Δ, δ).
2. the fourth in a series of items.
3. anything triangular, like the Greek capital delta (Δ).
4. Math. an incremental change in a variable, as Δ or δ.
5. a nearly flat plain of alluvial, often triangular, deposit between diverging branches of the mouth of a river.
6. (cap.) a star that is usu. the fourth brightest of a constellation: Delta Crucis.
[1350–1400; Middle English < Latin < Greek délta; akin to Hebrew dāleth]
del•ta′ic (-ˈteɪ ɪk) adj.

del·ta

(dĕl′tə)
A usually triangular mass of sediment, especially silt and sand, deposited at the mouth of a river. Deltas form when a river flows into a body of standing water, such as a sea or lake.

delta

Flat, alluvial land at a river mouth where it splits into many streams called distributaries.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.delta - a low triangular area of alluvial deposits where a river divides before entering a larger body of waterdelta - a low triangular area of alluvial deposits where a river divides before entering a larger body of water; "the Mississippi River delta"; "the Nile delta"
alluvial deposit, alluvial sediment, alluvium, alluvion - clay or silt or gravel carried by rushing streams and deposited where the stream slows down
geological formation, formation - (geology) the geological features of the earth
2.delta - an object shaped like an equilateral triangle
equiangular triangle, equilateral triangle - a three-sided regular polygon
3.delta - the 4th letter of the Greek alphabet
Greek alphabet - the alphabet used by ancient Greeks
alphabetic character, letter of the alphabet, letter - the conventional characters of the alphabet used to represent speech; "his grandmother taught him his letters"
Translations
دِلْتا ، دال النَّهْر
delta
delta
Dora
Daavid
delta
óseyri
delta
deltaupes delta
delta

delta

[ˈdeltə] N
1. (Geog) → delta m
2. (= letter) → delta f

delta

[ˈdɛltə] n [river] → delta mDelta Force n (US)Force f Delta forces spéciales de l'armée américaine

delta

nDelta nt

delta

:
delta ray
n (Phys) → Deltastrahl m
delta rhythm, delta wave
n (Physiol) → Deltawelle f
delta wing
n (Aviat) → Deltaflügel m

delta

[ˈdɛltə] ndelta m inv

delta

(ˈdeltə) noun
a roughly triangular area of land formed at the mouth of a river which reaches the sea in two or more branches. the delta of the Nile.
References in periodicals archive ?
Hedge ratio at the end of April was 34% of Agency financing, or 16% of total financing (8) (14)
The hedge ratio is the proportion of futures contract shares to hold per unit of expected MWh:
The purpose of this paper is to propose a new method for estimating the hedge ratio under the condition that the price processes of the spot and the futures are continuous-time processes, and the corresponding continuous-time processes are denoted by the stochastic differential equations.
The [h.sup.*], the risk-minimising hedge ratio, thus equals the slope coefficient of an Ordinary Least Squares (OLS) regression of spot price changes (dependent variable) on futures price changes (independent variable).
The paper is organized as follows: the second section presents the main findings regarding the relationship between volatility, welfare and investments, regarding the estimation of the optimal hedge ratio and briefly presents the agricultural policies of the European Union.
A more effective approach is to use modern portfolio theory (MPT) to identify the hedge ratio for each exposure that reduces VaR to an acceptable level while minimizing costs incurred.
Here [h.sub.t-1] is hedge ratio for period t-1, [s.sub.t], [f.sub.t] represent the logarithm of spot price, of futures price for period t, [DELTA][s.sub.t] = [s.sub.t] - [s.sub.t-1], [DELTA][f.sub.t] = [f.sub.t] - [f.sub.t-1] are respectively the spot and futures returns for period t.
With the proceeds we bought index-linked gilts, increasing our hedge ratio, but also participating in what we hoped would be a reversion from 2009 equity market lows.
After controlling for endogeneity, we find that market risk is positively related to both the hedge ratio and the income generation ratio.
It seems fairly obvious that when transaction costs are low, the optimal hedge ratio will be higher.
Shih stated that Nan Shan has adjusted the domestic-to-overseas hedge ratio to keep annual hedge cost under 1% of total cost.
In order to take account of hedging in connection with for example market-making, historical data for the relative size and correlation between the derivatives position and the remaining financial assets are used to calculate a hedge ratio. The average correlation is a negative 0.6, significantly lower than zero, indicating that the banks are engaged in hedging activities.