Crossword clues for stratification
Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Stratification \Strat`i*fi*ca"tion\, n. [Cf. F. stratification.]
The act or process of laying in strata, or the state of being laid in the form of strata, or layers.
(Physiol.) The deposition of material in successive layers in the growth of a cell wall, thus giving rise to a stratified appearance.
Douglas Harper's Etymology Dictionary
1610s, from Medieval Latin stratificationem (nominative stratificatio), noun of action from past participle stem of stratificare "to form strata," from stratum "thing spread out" (see stratum) + root of facere "to make" (see factitious). In sociology from 1879.
Wiktionary
n. 1 the process leading to the formation or deposition of layers, especially of sedimentary rocks 2 (context music English) a layering of musical texture 3 (context ecology English) the vertical layering of vegetation in a forest
WordNet
n. the act or process or arranging persons into classes or social strata
the condition of being arranged in social strata or classes within a group [syn: social stratification]
forming or depositing in layers
a layered configuration
the placing of seeds in damp sand or sawdust or peat moss in ordere to preserve them or promote germination
Wikipedia
Stratification may refer to:
In mathematics:
- Stratification (mathematics), any consistent assignment of numbers to predicate symbols
- Data stratification in statistics
In earth sciences:
- Stratification, or stratum, the layering of rocks
- Stratification (archeology), the formation of layers (strata) in which objects are found
- Stratification (water), the formation of water layers based on salinity and temperature
- Atmospheric stratification, the dividing of the Earth's atmosphere into strata
- Lake stratification, the dividing of lake water
In social sciences:
- Social stratification, the dividing of a society into levels based on power or socioeconomic status
In biology:
- Stratification (botany), where seeds are treated to simulate winter conditions so that germination may occur
- Stratification (clinical trials), partitioning of subjects by a factors other than the intervention
- Stratification (vegetation), the vertical layering of vegetation e.g. within a forest
- Population stratification, the stratification of a genetic population based on allele frequencies
Stratification has several usages in mathematics.
In horticulture, stratification is the process of treating stored or collected seed prior to sowing to simulate natural winter conditions that a seed must endure before germination. Some seed species undergo an embryonic dormancy phase, and generally will not sprout until this dormancy is broken. The time taken to stratify seeds depends on species and conditions; though in many cases two months is sufficient.
Stratification in the field of ecology refers to the vertical layering of a habitat; the arrangement of vegetation in layers. It classifies the layers (sing. stratum, pl. strata) of vegetation largely according to the different heights to which their plants grow. The individual layers are inhabited by different animal and plant communities (stratozones).
Water stratification occurs when water masses with different properties - salinity ( halocline), oxygenation ( chemocline), density ( pycnocline), temperature ( thermocline) - form layers that act as barriers to water mixing which could lead to anoxia or euxinia. These layers are normally arranged according to density, with the least dense water masses sitting above the more dense layers.
Water stratification also creates barriers to nutrient mixing between layers. This can affect the primary production in an area by limiting photosynthetic processes. When nutrients from the benthos cannot travel up into the photic zone, phytoplankton may be limited by nutrient availability. Lower primary production also leads to lower net productivity in waters.
Stratification of clinical trials, is the partitioning of subjects and results by a factor other than the treatment given.
Stratification can be used to ensure equal allocation of subgroups of participants to each experimental condition. This may be done by gender, age, or other demographic factors. Stratification can be used to control for confounding variables (variables other than those the researcher is studying), thereby making it easier for the research to detect and interpret relationships between variables. For example, if doing a study of fitness where age or gender was expected to influence the outcomes, participants could be stratified into groups by the confounding variable. A limitation of this method is that it requires knowledge of what variables need to be controlled.
Usage examples of "stratification".
Such overbuilding was not uncommon, one religion burying another, a stratification of Roman history.
Many of the camp sites, most of which are in locations sheltered from the prevailing northern winds, were relatively permanent, which shows, say some palaeontologists, that these primitive societies could resolve disputes and had an emerging social stratification.
Such associations certainly do not alter the economical stratification of society, but, especially in the small towns, they contribute to smooth social distinctions, and as they all tend to join in large national and international federations, they certainly aid the growth of personal friendly intercourse between all sorts of men scattered in different parts of the globe.
Stratification took place because the Talent appeared in a few Choosers, then spread to more each generation, until our ancestors no longer had a common goal with the unTalented.
Council had deemed worth carrying from Homeworld was a detailed geneology for every member of the Clan that had left during the Stratification.
In the cut-off world of big bikes, long runs and classy rumbles, this new, state-sanctioned stratification made the Hell's Angels very big.
Her co‑workers never believed her when she said that she located things in the heaps of printouts, programs, floppies, data, reports, management bulletins, journals, and ads on her desk by the oil company principle of geological stratification.
Geological stratification and radioactive dating provide information on archaeological, paleontological and geological events.
It is exactly the same as the ego-driven snobs, just setup on a different layer of stratification.
Who would have expected the pre-Socratic stockingcap scarecrow to be conversing with the stale theory of social stratification?
Second, food production may be organized so as to generate stored food surpluses, which permit economic specialization and social stratification.
The Nakeds faced a Camelotian dilemma: whether to accede to the realities of social stratification and capitulate to appearances as eveiything and deny your own hunger and seek contentment in conformity and tone down your spiel, spritz, shtick, and performance capability and rework it to suit a mainstream audience-or go iconoclastic all the way and fuck this overweening adolescent urge to BELONG.
Only Aldous Huxley ever wrote a scenario for social stratification that was completely, if chillingly, self-consistent and stable.
For the Maya Sector, the harsh social stratification which characterized most of the League outside of the inner worlds was neither necessary nor economically advantageous—.
Cave art, spiritualism, proto-urbanization, social stratification.