dipole

noun

di·​pole ˈdī-ˌpōl How to pronounce dipole (audio)
1
a
: a pair of equal and opposite electric charges or magnetic poles of opposite sign separated especially by a small distance
b
: a body or system (such as a molecule) having such charges or poles
2
: a radio antenna consisting of two horizontal rods in line with each other with their ends slightly separated
dipolar
ˈdī-ˌpō-lər How to pronounce dipole (audio)
ˌdī-ˈpō-
adjective

Example Sentences

Recent Examples on the Web The changes in trade wind strength can therefore result in the formation of tropical ocean dipoles. Jennifer Fitchett, Quartz Africa, 16 Feb. 2020 Earlier results have shown that the fine structure is slightly different along a specific axis of the Universe, called a dipole. Chris Lee, Ars Technica, 28 Apr. 2020 The 2019 to 2020 dipole has been unusually strong, with a temperature differential of 2°C. Jennifer Fitchett, Quartz Africa, 16 Feb. 2020 Scott: The magnetic dipoles tried to orient according to the field, but— Joyce: No, no, no. Rhett Allain, WIRED, 9 Aug. 2019 This dipole cycles between these extremes over three to five year periods, ordinarily with a 1°C difference in sea surface temperature. Jennifer Fitchett, Quartz Africa, 16 Feb. 2020 The dipole is defined by positive and negative sea surface temperature variations. Peter Fimrite, SFChronicle.com, 10 Jan. 2020 The Van Allen Probes are retired, but a subsequent instrument, the DSX dipole antenna, will explore the radiation belts and beam very low frequency (VLF) radio waves into them to see what happens. Caroline Delbert, Popular Mechanics, 27 Dec. 2019 This dipole model has two other problems, said Rubin and Heitlauf. Quanta Magazine, 17 Dec. 2019 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'dipole.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

Etymology

International Scientific Vocabulary

First Known Use

1912, in the meaning defined at sense 1a

Time Traveler
The first known use of dipole was in 1912

Dictionary Entries Near dipole

Cite this Entry

“Dipole.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dipole. Accessed 28 Nov. 2022.

Kids Definition

dipole

noun

di·​pole ˈdī-ˌpōl How to pronounce dipole (audio)
: a pair of equal and opposite electric charges or magnetic poles of opposite sign separated especially by a small distance

Medical Definition

dipole

noun

di·​pole ˈdī-ˌpōl How to pronounce dipole (audio)
1
: a pair of equal and opposite electric charges or magnetic poles of opposite sign separated by a small distance
2
: a body or system (as a molecule) having such charges

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