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 ?
In Australia, Stork (1995), using a lupin bioassay, reported 46% of the applied chlorsulfuron leached below 50 cm in a gradationally textured alkaline sandy loam soil (pH 8.
Field leaching and degradation of atrazine in a gradationally textured alkaline soil.
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.
At the latter locality the pebbly sandstone gradationally overlies grey polymictic conglomerate containing well rounded to angular clasts of quartz, mafic and felsic volcanic rocks, granite, maroon tuff, and green, grey and maroon siltstone.