# 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

## 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.
References in classic literature ?
Next instant, the luckless mate, so full of furious life, was smitten bodily into the air, and making a long arc in his descent, fell into the sea at the distance of about fifty yards.
I then begged him to go and suggest a distance, for my mind was growing weak and confused under the strain which had been put upon it.
Numbers and sizes and distances are so great, here, that we have to be made so we can FEEL them - our old ways of counting and measuring and ciphering wouldn't ever give us an idea of them, but would only confuse us and oppress us and make our heads ache.
Huck closed up and shortened his distance, now, for they would never be able to see him.
The king, who, as I before observed, was a prince of excellent understanding, would frequently order that I should be brought in my box, and set upon the table in his closet: he would then command me to bring one of my chairs out of the box, and sit down within three yards distance upon the top of the cabinet, which brought me almost to a level with his face.
He might, perhaps, reckon on the arrival of trains at the designated hours, in Europe, where the distances were relatively moderate; but when he calculated upon crossing India in three days, and the United States in seven, could he rely beyond misgiving upon accomplishing his task?
I had first seen the place on a moist afternoon when distances are deceptively diminished.
In fact, the bullets had actually pierced the cards in the exact places which the painted signs would otherwise have occupied, the lines and distances being as regularly kept as if they had been ruled with pencil.
Earth comprises distances, great and small; danger and security; open ground and narrow passes; the chances of life and death.
He discovered that the distances, as compared with the brilliant measurings of his mind, were trivial and ridicu- lous.
The two serving-men waited without; but as if they likewise mistrusted each other, they kept their respective distances.
Strangers came long distances to attend service at his church, with the mere idle purpose of gazing at his figure, because it was forbidden them to behold his face.

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