direction


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direction

1. the work of a stage or film director
2. the course along which a ship, aircraft, etc., is travelling, expressed as the angle between true or magnetic north and an imaginary line through the main fore-and-aft axis of the vessel
3. Music the process of conducting an orchestra, choir, etc.
4. Music an instruction in the form of a word or symbol heading or occurring in the body of a passage, movement, or piece to indicate tempo, dynamics, mood, etc.
5. Maths
a. (of an angle) being any one of the three angles that a line in space makes with the three positive directions of the coordinate axes. Usually given as α, β, and γ with respect to the x-, y-, and z-axes
b. (of a cosine) being the cosine of any of the direction angles

direction

[də′rek·shən]
(engineering)
The position of one point in space relative to another without reference to the distance between them; may be either three-dimensional or two-dimensional, the horizontal being the usual plane of the latter; usually indicated in terms of its angular distance from a reference direction.
(geology)

direction

direction
The place or point toward which the aircraft is moving or facing. Direction may be expressed as true, magnetic, or compass headings or paths. Various terms used to describe direction are azimuth, bearing, course, heading, and track. Azimuth and bearing as used in air navigation are measured from the north in a clock-wise direction from 001° to 360°. Course is the path to be flown by aircraft, and track is the actual path flown over the ground.
References in classic literature ?
At last the ape-man determined to continue toward the northeast in the general direction of German East Africa until he came upon natives from whom he might gain information as to Rokoff's whereabouts.
Bulan saw no harm in this, and without a shade of suspicion sat down upon a fallen tree and watched his two guides disappear into the jungle in opposite directions.
Tarzan had placed the finest marksmen of the tribe in the surrounding trees, with directions never to reveal themselves while the enemy was faced in their direction.
For two days they kept on in an eastward direction, against wintry blasts and occasional snow storms.
Sheldon happened to be looking in his direction at the moment he came into view, peering quickly up and down the avenue before he stepped into the open.
In three different directions I saw the crowd part, at one and the same moment.
Naked and unarmed, as I was, my end would have been both speedy and horrible at the hands of these cruel creatures had I had time to put my resolve into execution, but at the moment of the shriek each member of the herd turned in the direction from which the sound seemed to come, and at the same instant every particular snake-like hair upon their heads rose stiffly perpendicular as if each had been a sentient organism looking or listening for the source or meaning of the wail.
I fired until my rifle was empty and they were almost upon me, and then a glance showing me that Dejah Thoris and Sola had disappeared among the hills, I sprang up, throwing down my useless gun, and started away in the direction opposite to that taken by Sola and her charge.
That movement from the Nizhni to the Ryazan, Tula, and Kaluga roads was so natural that even the Russian marauders moved in that direction, and demands were sent from Petersburg for Kutuzov to take his army that way.
The plain which lies beyond the white cliffs which flank the Darel Az upon the shore nearest the Mountains of the Clouds is about as near to any direction as any Pellucidarian can come.
But how was I to guess in which direction lay Sari?
He had but partially consumed his kill when he suddenly became aware of a movement in the brush at no great distance from him and downwind, and a moment later his nostrils picked up the scent of Numa from the opposite direction, and then upon either side he caught the fall of padded feet and the brushing of bodies against leafy branches.

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