saltation


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

saltation

 [sal-ta´shun]
1. the action of leaping. 2. the dancing that sometimes accompanies chorea. 3. conduction along myelinated nerves. 4. in genetics, an abrupt variation in species; a mutation. adj., adj sal´tatory.

sal·ta·tion

(sal-tā'shŭn),
A dancing or leaping, as in a disease (for example, chorea) or physiologic function (for example, saltatory conduction).
[L. saltatio, fr. salto, pp. -atus, to dance, fr. salio, to leap]

saltation

/sal·ta·tion/ (sal-ta´shun)
1. the action of leaping.
2. the jerky dancing or leaping that sometimes occurs in chorea.
4. in genetics, an abrupt variation in species; a mutation.
5. sudden increases or changes in the course of an illness.sal´tatory

saltation

(săl-tā′shən, sôl-)
n.
1. The act of leaping, jumping, or dancing.
2. Discontinuous movement, transition, or development; advancement by leaps.
3. Genetics A single mutation that drastically alters the phenotype.

saltation

[saltā′shən]
Etymology: L, saltare, to dance
a mutation causing a significant difference in appearance between parent and offspring or an abrupt variation in the characteristics of a species. saltatorial, saltatoric, saltatory [sal′tətôr′ē] , adj.

sal·ta·tion

(sal-tā'shŭn)
A dancing or leaping, as in a disease (e.g., chorea) or physiologic function (e.g., saltatory conduction).
[L. saltatio, fr. salto, pp. -atus, to dance, fr. salio, to leap]

saltation

  1. any changes of an abrupt nature that occur in the thalli of fungi either through mutation or the occurrence of segregation of parts of the thallus with different genetic make-up (HETEROKARYONS and HOMOKARYONS).
  2. the movement of soil particles by wind.
  3. the occurrence of a major mutation in a single generation, bringing about significant change.

saltation

1. the action of leaping, as in louping ill or the dancing of porcine myotonia congenita.
2. conduction along myelinated nerves.
3. in genetics, an abrupt variation in species; a mutation.
References in periodicals archive ?
The usefulness of this information is questionable in its application to a field situation, as the degree of crop cover usually present at this stage of crop development would reduce the risk of erosion and saltation occurring to a negligible level.
In addition, the methodology of the Skidmore's trial is similar to Woodruff (1956) where a single row of plants were placed in the saltation stream, which may have exaggerated the result when compared with a field population where self sheltering of plants would occur.
Right now, we're pretw confident about placing the line between suspension and saltation at 10 inches for most types of soil.
The second term of the modifying factor K (Eqn 11) takes into account the effects of the saltation stress and the third term increases the available stream power due to sediment concentration.
Although there is occasional mention in the literature of soil particle saltation by raindrop impact, this is normally considered synonymous with splashing.
This demonstration of dry soil particle saltation by raindrop impact indicates the potential for this individual transport mechanism to cause erosion at the onset of storms before the soil is wetted, and on water-repellent soil surfaces which can remain dry even under a water film (Terry and Shakesby 1993).
Particles such as water-stable aggregates and stones which are too large to be thrown into parabolic trajectories by saltation or entrained and carried in splashes are prone to this effect.
However, the rainsplash mechanisms of cratering, splashing, and saltation were all observed to be effective in detaching and removing soil material, although the differing wettability characteristics of the burned and rip-ploughed soils influenced and responded to these mechanisms in contrasting ways.
Evidence that splashing and splash saltation operated on both rip-ploughed and burned soils comes from (i) photographs and video footage of drop collision and rupture on the samples and (ii) the characteristics of the sediment and sediment patterns deposited on the splash landing area around the sample beakers after each test.
As the rip-ploughed soils were wetted, saltation of dry particles diminished and splashing became the dominant process.
Second, under laboratory drop impact tests, several splash sub-mechanisms can be identified: cratering, splashing, and saltation.