# 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 periodicals archive ?
In addition to the BGA section above, any component package type and soldering technology (wave solder, hand solder, robotic soldering) can be cross-sectioned to ensure IPC criteria has been achieved.
We feel that more interreader calibration and validation of cross-sectioned annuli by the Peterson method (Ricker, 1975) can resolve this problem.
The patterns were subsequently cross-sectioned and imaged again.

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