gradation

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gradation:

see ablautablaut
[Ger.,=off-sound], in inflection, vowel variation (as in English sing, sang, sung, song) caused by former differences in syllabic accent. In a prehistoric period the corresponding inflected forms of the language (known through internal reconstruction) had
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.

Gradation

 

(The principle of biological perfection), a principle of the gradual development from the simple to the complex, based on the striving toward perfection found in living things; the principle was introduced by J. B. Lamarck in his theory of evolution.


Gradation

 

a stylistic device; a series of similar words or expressions (images, similes, metaphors, and so on) that gradually emphasize and increase or, on the other hand, decrease (climax and anticlimax, respectively) the sense or emotional significance. The principle of gradation may be the device in a verse composition (in lyric poetry—for example, “The east grew white ...” by F. I. Tiutchev) or plot composition (byliny [epic folk songs] or fairy tales—for example, The Little Tower Chamber). An example of stylistic climactic gradation is “I do not regret, I do not call, I do not cry” (S. A. Esenin).

gradation

[grā′dā·shən]
(geology)
The leveling of the land, or the bringing of a land surface or area to a uniform or nearly uniform grade or slope through erosion, transportation, and deposition.
Specifically, the bringing of a stream bed to a slope at which the water is just able to transport the material delivered to it.

particle-size distribution

A tabulation of the percentages of the various sizes of particles in a sample of soil or aggregate for concrete as determined by sieve analysis.

gradation

1. (in painting, drawing, or sculpture) transition from one colour, tone, or surface to another through a series of very slight changes
2. Geology the natural levelling of land as a result of the building up or wearing down of pre-existing formations
References in periodicals archive ?
A study on such soils of southern Australia was reported by Stork (1995), in which chlorsulfuron moved to a depth of 50 cm in a gradationally textured alkaline loam soil (pH 8.
The formation is gradationally underlain by basaltic to andesitic rocks of the Raymond Mountain Formation and overlain by rhyolitic tuff of the Waltons Lake Formation (Barr and White 2001a, c).
Field leaching and degradation of atrazine in a gradationally textured alkaline soil.
To the northeast, Johnson (2001, 2003) interpreted the Ragged Falls suite to pass gradationally into similar granitoid rocks of the undated Rocky Lakes Suite, which she described as granite, granodiorite, tonalite, and quartz diorite, cut by numerous mafic dykes.
Gradationally above the conglomerate are 20 m of calcareous sandstone and minor pebbly sandstone, that is in turn gradationally overlain by 5 m of limestone and siltstone that have yielded Arenig-Llanvirn conodonts and a few crinoid fragments (Nowlan 1981; Fyffe et al.