pole
11. a long slender usually round piece of wood, metal, or other material
2. the piece of timber on each side of which a pair of carriage horses are hitched
4. Horse racing chiefly US and Canadiana. the inside lane of a racecourse
b. (as modifier): the pole position
c. one of a number of markers placed at intervals of one sixteenth of a mile along the side of a racecourse
5. Nauticala. any light spar
b. the part of a mast between the head and the attachment of the uppermost shrouds
6. under bare poles Nautical (of a sailing vessel) with no sails set
pole
21. either of the two antipodal points where the earth's axis of rotation meets the earth's surface
3. Physicsa. either of the two regions at the extremities of a magnet to which the lines of force converge or from which they diverge
b. either of two points or regions in a piece of material, system, etc., at which there are opposite electric charges, as at the two terminals of a battery
4. Maths an isolated singularity of an analytical function
5. Biologya. either end of the axis of a cell, spore, ovum, or similar body
b. either end of the spindle formed during the metaphase of mitosis and meiosis
6. Physiol the point on a neuron from which the axon or dendrites project from the cell body
7. Geometry the origin in a system of polar or spherical coordinates
Pole
1 Reginald. 1500--58, English cardinal; last Roman Catholic archbishop of Canterbury (1556--58)
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
pole
[pōl] (crystallography)
A direction perpendicular to one of the faces of a crystal.
One of the points at which normals to crystal faces or planes intersect a reference sphere at whose center the crystal is located.
(electricity)
One of the electrodes in an electric cell.
An output terminal on a switch; a double-pole switch has two output terminals.
(mathematics)
An isolated singular point z0 of a complex function whose Laurent series expansion about z0 will include finitely many terms of form an (z-z0)-n .
For a great circle on a sphere, the pole of the circle is a point of intersection of the sphere and a line that passes through the center of the sphere and is perpendicular to the plane of the circle.
For a conic section, the pole of a line is the intersection of the tangents to the conic at the points of intersection of the conic with the line.
For a quadric surface, the pole of a plane is the vertex of the cone which is tangent to the surface along the curve where the plane intersects the surface.
The origin of a system of polar coordinates on a plane.
The origin of a system of geodesic polar coordinates on a surface.
(mechanics)
A point at which an axis of rotation or of symmetry passes through the surface of a body.
(optics)
The geometric center of a convex or concave mirror.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
pole
A long, slender, tapering piece of wood; a pale, prop, stake, or stay.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.