# segment

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Related to segment: ST segment

## segment

1. Maths
a. a part of a line or curve between two points
b. a part of a plane or solid figure cut off by an intersecting line, plane, or planes, esp one between a chord and an arc of a circle
2. Zoology any of the parts into which the body or appendages of an annelid or arthropod are divided

## Segment

in mathematics. A segment of a line is the set of points on the line that are located between two points A and B; in Russian usage, the segment includes both A and B. In other words, a segment is the set of points of a line such that the coordinates of the points satisfy the condition axb, where a and b are the coordinates of the segment endpoints. Thus, the segment constitutes a closed interval and can be denoted by [a, b].

## Segment

(1)A segment in the plane is a region bounded by a chord and the arc of the curve subtended by the chord. The area of the segment AmB of the circle in Figure 1 is the difference between the area of the sector OAmB and the triangle OAB.

Figure 1

(2) A segment in space is a part cut off from a solid by a plane. An example is a spherical segment.

(3) A segment of a line is the set of points on a line that are located between two points A and B. In Russian usage, the two points A and B are included in the segment. Thus, a segment is the set of points on a line whose coordinates satisfy the condition axb. (SeeINTERVAL AND SEGMENT.)

## Segment

(also metamere), one of a series of homologous parts of the body of an animal, located along the long axis of the body. Segments may be similar to one another; for instance, among the most primitive annelids the entire complex of organs is repeated in each segment. Given the same general structure, complete similarity between segments may be destroyed by the absence of certain organs or by some change in the organs: these types of segments may be observed among arthropods. The segmentation of an animal’s body is also called metamerism.

## segment

[′seg·mənt]
(analytical chemistry)
A specific, demarcated portion of a lot of a substance that is to be chemically analyzed.
(computer science)
A single section of an overlay program structure, which can be loaded into the main memory when and as needed.
In some direct-access storage devices, a hardware-defined portion of a track having fixed data capacity.
(mathematics)
A segment of a line or curve is any connected piece.
A segment of a circle is a portion of the circle bounded by a chord and an arc subtended by the chord.
A segment of a totally ordered Abelian group G is a subset D of G such that if a is in D then so are all elements b satisfying -aba.
In air operations, a basic functional division of an instrument approach procedure; it bears a fixed orientation with respect to the course to be flown; it is assigned specific geometric coordinates which uniquely determine its position; the location of the segment is assigned with respect to the obstacles in the operations area.

## segment

/seg'ment/ 1. <architecture> A collection of pages in a memory management system.

2. <programming> A separately relocatable section of an executable program. Unix executables have a text segment (executable machine instructions), a data segment (initialised data) and a bss segment (uninitialised data).

3. <networking> network segment.

4. To experience a segmentation fault. Confusingly, the stress is often put on the first syllable, like the noun "segment", rather than the second like mainstream verb "segment". This is because it is actually a noun shorthand that has been verbed.

5. A block of memory in a segmented address space.

## segment

(1) Any partition, reserved area, partial component or piece of a larger structure. See overlay.

(2) One of the bars that make up a single character in an LED or LCD display.

(3) For DOS segment addressing, see paragraph.
References in periodicals archive ?
He added that the recent ministerial decision on cigarette prices contributed to balancing financial burdens between the three segments resulting from the imposition of taxes and fees.
Topic 280 defines an operating segment as a component of a public entity that has these three characteristics:
FMC Lithium reported third quarter segment revenue of \$70 million, an increase of 22 percent from the prior-year quarter.
Lim added: "This same vision prompts our constrution of Segments 9 and 10 - our collective enterprise that will connect our ports and harbors with centers of trade and commerce in Central Luzon and beyond - deep inside the metropolis.
In addition to the DATA segment transmission, the ACK segment transmission should also depend on the underlying flooding-based routing protocols.
The segmented polyurethane materials were prepared by a one-shot, hand-cast bulk polymerization process as described previously [12].
"Brand marketing is extremely important as Wausau Paper/Bay West competes with companies with strong brand recognition in the consumer segment and, in many cases, carry those same or similar brand names in the away-from-home market," says Mark Stanland, director of marketing, Bay West products.
PCR assays identify differences between genotypes A and B of BAV based on the length of the amplicon obtained by specific primers in segment 9.
The team has already sequenced segments of 500 bases, he says.
GM's performance in the latest poll also attests to considerable improvements in its vehicle quality with the Buick LeSabre car scoring the highest points in the full-size car segment, the agency said.
However, since recrystallization of TPU is dominated by the hard segment of the polymer, these materials tended to process poorly in terms of hardening kinetics, since so little hard segment remains.

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