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8 Wintry Words to Defrost Your Vocabulary

sunspot

[suhn-spot] /ˈsʌnˌspɒt/
noun
1.
one of the relatively dark patches that appear periodically on the surface of the sun and affect terrestrial magnetism and certain other terrestrial phenomena.
Origin
1805-1815
1805-15; sun + spot
Related forms
sunspotted, adjective
sunspottedness, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for sunspot
  • We have gone a number of months with a dearth of meaningful sunspot activity.
  • Even the occasional sunspot now is often tied in with the last sunspot cycle.
  • However, the mechanism for sunspot production has remained hidden.
British Dictionary definitions for sunspot

sunspot

/ˈsʌnˌspɒt/
noun
1.
any of the dark cool patches, with a diameter of up to several thousand kilometres, that appear on the surface of the sun and last about a week. They occur in approximately 11-year cycles and possess a strong magnetic field
2.
(informal) a sunny holiday resort
3.
(Austral) a small cancerous spot produced by overexposure to the sun
Derived Forms
sunspotted, 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
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Word Origin and History for sunspot
n.

1868, in astronomy, from sun (n.) + spot (n.). Earlier "a spot on the skin caused by exposure to the sun" (1818).

Online Etymology Dictionary, © 2010 Douglas Harper
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sunspot in Science
sunspot
  (sŭn'spŏt')   
Any of the dark, irregular spots that usually appear in groups on the surface of the Sun (its photosphere), lasting from a few days to several weeks or more. Sunspots appear dark because they are cooler, by up to 1,500°K, than the surrounding photosphere. They are associated with strong magnetic fields and solar magnetic storms moving in a vortex pattern, similar to a tornado on Earth. The number of sunspots waxes and wanes over an 11-year period; at maximum activity there are often increased numbers of solar flares.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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