# cross section

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Related to transverse section: oblique section, sagittal section, frontal 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 foot is observed in a transverse section (i.e., perpendicular to the elongate shape of the foot), through the posterior region where it is adjacent but not attached to the operculum, such that the section produced circumferentially bears an epidermal surface.
Transverse section of the pedal ganglia (PG) stained with Gallego's trichrome A) Low magnification shows the neural tissue surrounded by a conjunctive capsule (arrowhead), the two ganglia are close to the anterior retractor muscles of the byssus (RAB) and the retractor muscles of the foot (RFM).
As viewed in equatorial transverse section, the stone appears almost circular to pentagonal with a prominent star-shaped structure formed by the radiating locular envelopes (Fig.
Thin transverse section cuttings were made from the sample and stained with Lactophenol cotton blue.
Figure 4 shows the microstructure of columnar zone of the 30 [micro]m/s withdrawing DS ingot by observing a transverse section 5 mm below that shown in Figure 3 (named section 30-2 hereafter).
Caption: Figure 3: Transverse section of the same CT scan showing the left collection yet a drastic dimensional reduction of the right collection.
The variations of microstructure and fiber volume fraction across transverse section of bamboo culm were studied.
In group A, the transverse section of the uterine horn showed a stellate shaped lumen encircled by endometrium, myometrium and perimetrium.
B (unprocessed)--Photomicrograph showing the transverse section of the spleen of rats fed the unprocessed fluted pumpkin seeds.
1: Photomicrograph of a part of transverse section of spinal cord of rabbit passing through the caudal part of fifth cervical segment (C-5) showing a chromatolysed (ch) neuron.
Seed coat anatomy: Transverse section of seed coat shows variable thickness, ranging between 150-205um.
In group A the transverse section of the uterine horn showed a star shape lumen, (Fig-1),

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