dipole

[dahy-pohl]

noun

Physics, Electricity. a pair of electric point charges or magnetic poles of equal magnitude and opposite signs, separated by an infinitesimal distance.
Physical Chemistry. a polar molecule.
Also called dipole antenna. Radio, Television. an antenna of a transmitter or receiving set consisting of two equal rods extending in opposite direction from the connection to the lead-in wire.

Nearby words

  1. dipmet,
  2. dipnoan,
  3. dipodic,
  4. dipody,
  5. dipolar ion,
  6. dipole moment,
  7. dipper,
  8. dippy,
  9. dipropellant,
  10. dipropyltryptamine

Origin of dipole

First recorded in 1910–15; di-1 + pole2

Related formsdi·po·lar, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


British Dictionary definitions for dipolar

dipole

noun

two electric charges or magnetic poles that have equal magnitudes but opposite signs and are separated by a small distance
a molecule in which the centre of positive charge does not coincide with the centre of negative charge
Also called: dipole aerial a directional radio or television aerial consisting of two equal lengths of metal wire or rods, with a connecting wire fixed between them in the form of a T
Derived Formsdipolar, adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for dipolar

dipole

[dīpōl′]

A pair of electric charges or magnetic poles, of equal magnitude but of opposite sign or polarity, separated by a small distance.
A molecule having two such charges or poles.
An antenna consisting of two rods of equal length extending outward in a straight line. Dipole antennas are usually used for frequencies below 30 megahertz.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.