delta

(redirected from deltaic)
Also found in: Dictionary, Thesaurus, Financial, Encyclopedia, Wikipedia.

delta

 [del´tah]
1. the fourth letter of the Greek alphabet, Δ or δ; used in chemical names to denote the fourth of a series of isomeric compounds or the carbon atom fourth from the carboxyl group, or to denote the fourth of any series.
2. a triangular area.

Δ

1. Fourth letter of the Greek alphabet, delta.
2. In chemistry, denotes a double bond, usually with a superscript to indicate position in a chain (Δ5), application of heat in a reaction (A B), absence of heat treatment (), distance between two atoms in a molecule, or position of a substituent located on the fourth atom from the carboxyl or other primary functional group (δ); change (Δ); thickness (δ); chemical shift in NMR (δ).
3. anatomy a triangular surface.

del·ta (Δ),

(del'tă),
1. Fourth letter of the Greek alphabet, Δ (capital), δ (lower case).

δ

/δ/ (delta, the fourth letter of the Greek alphabet) heavy chain of IgD; δ chain of hemoglobin.

delta

/del·ta/ (delt´ah)
1. the fourth letter of the Greek alphabet; see also δ-.
2. a triangular area.

delta

[del′tə]
Δ, δ, fourth letter of the Greek alphabet.

YY1

A gene on chromosome 14q that encodes a ubiquitous transcription factor belonging to the GLI-Kruppel class of zinc finger proteins, which directs histone deacetylases or histone acetyltransferases to myriad promoters activating or repressing their activity, implicating histone modification in YY1 activity.

δ,

Δ
Abbreviation for delta; diopter.

del·ta

(Δ, δ) (del'tă)
1. Fourth letter of the Greek alphabet.
2. chemistry A double bond, usually with a superscript to indicate position in a chain (Δ5); application of heat in a reaction (A B); absence of heat treatment (Δ); distance between two atoms in a molecule, or position of a substituent located on the fourth atom from the carboxyl or other primary functional group (δ); change (Δ); thickness (δ); chemical shift in NMR (δ).
3. anatomy A triangular surface.

delta,

n a Greek letter symbolized by upper case Δ or lower case δ. See also Greek letters.

Δ

, δ
1. Fourth letter of the Greek alphabet, delta.
2. anatomy a triangular surface.

delta

1. the fourth letter of the Greek alphabet, Δ or δ; used in chemical names to denote the fourth of a series of isomeric compounds or the carbon atom fourth from the carboxyl group, or to denote the fourth of any series.
2. a triangular area.

delta T lymphocyte
see T lymphocyte.
References in periodicals archive ?
09 were part of a progradation deltaic succession whereby a floodplain depositional environment is progressively replacing a mangrove swamp environment followed by a peat swamp environment.
The river discharge in the deltaic region has now reduced to about one-fifth and the river has been confined to a single channel almost down to the coastal area.
While our data suggests that terrapins preferred the oyster reef habitat, as evidenced by the high numbers captured there, the results are likely the outcome of more intense sampling in that habitat compared to the riverine and deltaic habitats.
Palaeocurrent indicators, such as cross stratifications and channel axis orientation in the fluvial and deltaic sandstone, indicate sediment supply from the north (Plink-Bjorklund & Bjorklund 1999).
Recent work to re-examine the paleoenvironment of the Campbellton Formation (Kennedy and Gibling 2011, and references therein) has resulted in the "Atholville Beds" being attributed to a coastal deltaic setting, with a marine influence, as demonstrated by rare occurrences of prasinophytes (tasmanitids) and acritarchs (Blieck and Cloutier 2000).
He explores how Bengal's immense deltaic rivers, which rearrange the landscape every year, along with numerous invasions have impacted the social fabric.
Populations in low-lying islands and deltaic regions are particularly at risk,' he says.
3) The restoration of coastal Louisiana, one of the great deltaic ecosystems of the world, which has lost 2,000 square miles of coastal marshes and swamp forests in the past 100 years, should be a national water resources investment priority.
The sedimentology of the conglomerate has been interpreted by the authors (see Laurito & Valerio, in press a), as a sequence of subaqueous deltaic fan deposits; especially for its common sharks teeth remains.
With Ngege-1 opening up a new deltaic play fairway with high quality reservoir we are very encouraged by the potential of this programme in the north of Block 2.
Geomorphological mapping shows that there is a transition between the floodplain with natural levees and back marshes, and the deltaic plain near the border of Cambodia and Vietnam (Ta et al.