# cross section

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## cross section

also cross-sec·tion (krôs′sĕk′shən, krŏs′-)
n.
1.
a. A section formed by a plane cutting through an object, usually at right angles to an axis.
b. A piece so cut or a graphic representation of such a piece.
2. Physics A quantity, measured in units of barns, used to express the probability of an encounter between particles over a given area in a collision. Also called collision cross section.
3. Statistics A sample meant to be representative of a whole population.
4. Informal A variety; a diversity.

## cross section

n
1. (Mathematics) maths a plane surface formed by cutting across a solid, esp perpendicular to its longest axis
2. (Mathematics) a section cut off in this way
3. the act of cutting anything in this way
4. a random selection or sample, esp one regarded as representative: a cross section of the public.
5. (Surveying) surveying a vertical section of a line of ground at right angles to a survey line
6. (General Physics) physics a measure of the probability that a collision process will result in a particular reaction. It is expressed by the effective area that one participant presents as a target for the other

## cross′ sec`tion

n.
1. a section made by a plane cutting something transversely, esp. at right angles to the longest axis.
2. a representative sample showing all characteristic parts, relationships, etc., of the whole.
3. a vertical section of the ground surface taken at right angles to a survey line.
4. Physics. a measure of the probability, expressed as the effective area of a given particle, that one particle will interact with another.
cross′-sec′tion, v.t.
ThesaurusAntonymsRelated WordsSynonymsLegend:
 Noun 1 cross section - a section created by a plane cutting a solid perpendicular to its longest axisprofile - a vertical section of the Earth's crust showing the different horizons or layersplane section, section - (geometry) the area created by a plane cutting through a solid 2 cross section - a sample meant to be representative of a whole populationsample - a small part of something intended as representative of the wholestatistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters 3 cross section - (physics) the probability that a particular interaction (as capture or ionization) will take place between particles; measured in barnsprobability, chance - a measure of how likely it is that some event will occur; a number expressing the ratio of favorable cases to the whole number of cases possible; "the probability that an unbiased coin will fall with the head up is 0.5"atomic physics, nuclear physics, nucleonics - the branch of physics that studies the internal structure of atomic nuclei
Translations
section efficace

## cross section

n (Bio) → ; (of population) → campione m (rappresentativo) (Topography) →
References in classic literature ?
An emotion is essentially a process, and it will be only what one may call a cross-section of the emotion that will be a perception, of a bodily condition according to James, or (in certain cases) of an external object according to his opponents.
The authors developed an extensive spreadsheet to calculate laminar flow ratios of several runner cross-sections, including those discussed in this article.
Figure 1a presents a typical OM image of the morphology of the seed oil flax fibers, showing cross-sections of both technical and elementary fibers.
It is also very successful in the preparation of site specific cross-sections and planar samples.
Profiles or cross-sections are constructed across a contour map to provide a three-dimensional view of the topography.
Anderl: Delsa.Anderl@noaa.gov Table 1 Precision of age estimates made from the surfaces and cross-sections of Greenland halibut (Reinhardtius hippoglossoides) sagittae.
In this paper a model of an N-stepped bar with variable Cross-sections coupled with foundation by means of lumped masses and springs is studied.
The proposed refined approach to the selection of the allowable cross-sections Su of wires and cables in circuits of electrical installations for general industrial purposes.
LODHRAN -- Deputy Commissioner Rao Imtiaz Ahmad said on Thursday that cross-sections and parks in the city would soon be powered by solar system to provide lighting arrangements there.
We provide an atlas of matched anatomic cross-sections and contrast-enhanced computed tomographic (CT) images of the celomic cavity in three highly diffused psittacine species.
Two cross-sections having the same dimensions of h = 0.6 m and b = 0.3 m, but of different reinforcement areas, namely, [A.sub.s] = 18.60-[10.ssup.-4] [m.sup.2] and [A.sub.s] = 37.20[??][10.sup.-4] [m.sup.2], located at a = 0.050 m from its centre to the bottom of the beam, are considered.

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