# segment

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## 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 ?
This grouping is based on sequences of segments 7 and 9: amino acid sequences of segment 7 show an identity of 72% between the 2 genotypes, while those of segments 9 show an identity of 41%.
They understand their company's strategy--which market segments have been prioritized and why.
Current machine technology for all market segments includes Crescent formers, TADs, and shoe presses.
Of this group, 25 patients--18 men and seven women (mean age: 30 yr)--underwent a facial nerve exploration; 16 had experienced immediate facial nerve paralysis following a temporal bone trauma, and nine had experienced decompression of the labyrinthine segment of the facial nerve as a result of Bell's palsy.
The City Hall/Insurance segment recorded 63,000 square feet of leasing activity and 30,000 square feet of positive absorption in August.
Two or more operating segments may be combined and reported as a single operating segment "if the segments have similar economic characteristics and if the segments are similar in each of the following areas:
A requirement that segments constitute at least 75% of the enterprise total.
The study consisted of three parts: the first part involved the development of a set of service attributes and attribute factors (Ting, 1995); the second part involved the identification of different segments based on socio-demographic and injury variables; and the last part involved the identification of perceptions and preferences of the services provided by two major groups of rehabilitation providers and the Hong Kong Workers' Health Center (WHC).
The requirement for material profit and loss statements by industry segments clearly suggest that the IRS will emphasize the profit split method, at least as a check.
As simple as living in the country sounds, further investigation is warranted due to the complexity of the population--its wants and needs as compared to other market segments, and the significance of this market segment's growth and purchasing power.
The first 8 to 13 nucleotide bases at the 3' ends of all three RNA segments have a sequence that is conserved in the viruses of this genus, with a complementary consensus sequence occurring at the 5' end; the ends of the segments are noncovalently linked so that the RNA occurs in a loosely bound circular configuration within the nucleocapsids (11).

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