# cross section

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Related to cross section: Scattering cross section

## 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 periodicals archive ?
The digitizer is used to locate the nodes of the finite element model using a large drawing or photograph of the tire cross section.
MRI scanners can combine these cross sections into three-dimensional images of the body's nerve networks.
Figures 4a and 4b provide cross sections of the two risers, which have differing flow rates after four seconds.
In this situation, an o-ring with the smallest possible cross section should be used, as well as a rubber compound with low permeability.
The voltage on the electrodes is varied by computer to deposit binder only in specific locations corresponding to the layer cross section.
The runner cross section is increased to further reduce velocity and allow any inclusions that escaped the sprue filtration to float out of the stream and be trapped along the top of the runner.
To calculate the intensity of x-ray emission in electron beam microanalysis requires a knowledge of the energy distribution of the electrons in the solid, the energy variation of the ionization cross section of the relevant subshell, the fraction of ionizations events producing x rays of interest and the absorption coefficient of the x rays on the path to the detector.
In order to have a suitable mathematical relation for temperature drop in terms of depth of cross section, a third-degree polynomial is the most suitable choice after testing different curve fittings.
On the basis of interpreted sounding results, five geo- electrical cross section have been generated along the profile A-A/, B-B/, C-C/, D-D/, E-E/, F-F/, G- G/.
In the Nuclear Data Center of International Atomic Energy Agency (IAEA) [I], Nuclear Data Library (EXFOR) is emphasis on the improvement of cross section data for innovative reactor designs and nuclear transmutation analyses.
com)-- Golden Software, LLC, the leading developer of affordable scientific graphics software, announces the release of Strater 5, an intuitive subsurface visualization program designed to display a wide variety of well log, borehole, and cross section data.
0 for permeable interlocking concrete pavement (PICP) generates time-saving cross section drawings with base and subbase thicknesses, plus CAD drawings illustrating calculated hydrologic and structural requirements from user-designated rainfall events, runoff flows from contiguous surfaces, traffic loads, underdrains and soil subgrade characterizations.

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