# Distance

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## distance

1. Geometry
a. the length of the shortest line segment joining two points
b. the length along a straight line or curve
2. Horse racing
a. Brit a point on a racecourse 240 yards from the winning post
b. Brit any interval of more than 20 lengths between any two finishers in a race
c. US the part of a racecourse that a horse must reach in any heat before the winner passes the finishing line in order to qualify for later heats
3. go the distance Boxing to complete a bout without being knocked out
4. the distant parts of a picture, such as a landscape
5. middle distance
a. (in a picture) halfway between the foreground and the horizon
b. (in a natural situation) halfway between the observer and the horizon
6. Athletics relating to or denoting the longer races, usually those longer than a mile
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

## Distance

distance in depth between servicemen, guns, vehicles, and subunits or units (ships) when formed in ranks, on the march (cruise), or in combat formation and also between aircraft when flying in formation or in a combat formation.

## Distance

an important geometric concept whose meaning depends on the kind of entities for which it is defined. The distance between two points is the length of the line segment joining the points. The distance from a point to a line or a plane is the length of the perpendicular from this point to the line or plane. The distance between two parallel lines or planes is the length of a common perpendicular to the lines or planes. The distance between two nonintersecting nonparallel lines in space is equal to the distance between the parallel planes in which the lines lie—that is, the length of the line segment that joins the lines and is perpendicular to both.

## distance

[′dis·təns]
(mathematics)
A nonnegative number associated with pairs of geometric objects.
The spatial separation of two points, measured by the length of a hypothetical line joining them.
For two parallel lines, two skew lines, or two parallel planes, the length of a line joining the two objects and perpendicular to both.
For a point and a line or plane, the length of the perpendicular from the point to the line or plane.
(mechanics)
The spatial separation of two points, measured by the length of a hypothetical line joining them.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
* What changes made the biggest difference on the flight distance of your rocket?
Flight distances of dabblers and scoters, but not gulls, increased with proximity to eagles.
Three significant quantities, namely, flight fuel consumption, flight distance, and flight time, are calculated to evaluate air traffic efficiency.
Non-stop flight distance: 6 hours 40 minutes (Emirates, Air Mauritius)
Table 1 summarises the mean values with respect to the outcome measures investigated, including hip abduction strength, the x-factor, ball flight distance and smash ratio (accuracy), with and without KT application.
For each projection angle the flight trajectory was calculated and the horizontal flight distance was recorded.
Deputy McHugh revealed a Coast Guard helicopter was at Malin Head at the time of Maura's accident, a short flight distance away.
The model not only considers the flight height, the horizontal flight distance, and the attitude angle of UAV as well as other flight parameters, in the height of ground receiving station, the angle of receiving antennas, and the diffuse radius and height as well as other diffuse parameters of the environment but also considers the various components of the channel, making it consistent with the real environment to a great extent.
The extent of the communication that is possible between UAVs is 200 m, and the UAVs are 150 m away from the X-axis; thus, by making use of this arrangement, the leader UAV plays a role in deciding the UAVs' positions to make their flight distance as short as possible from the neighboring UAVs as they avoid colliding with the obstacle.
Performances will be evaluated based on three main factors: creativity of the craft, showmanship and flight distance. The pilot has to jump from a 6m-high platform and fly as far as possible (five points per metre).
People who design modern zoos use a criterion they call "flight distance." Most animals have a prescribed distance they would run, if frightened, before they turned to look back.

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