sunspot

[ suhn-spot ]

/ ˈsʌnˌspɒt /

noun

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 of sunspot

First recorded in1805–15; sun + spot

OTHER WORDS FROM sunspot

sunspotted, adjectivesun·spot·ted·ness, noun

Words nearby sunspot

Sunshine State, sunsick, sun sign, sunspace, sun spider, sunspot, sunspot cycle, sunspots, sun star, sunstone, sunstroke

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for sunspot

And Bishop, Colossus, Warpath, Blink, Sunspot, Quiksilver, Stryker and Havoc will all be there too.
The Most Anticipated Culture Events of 2014: ‘Inherent Vice,’ ‘Divergent,’ and More||January 1, 2014|DAILY BEAST
There was still sadness in her breast but it was but a sunspot in the great glory of her happiness.
The Short Cut|Jackson Gregory
It means you can only approximately predict the future course of sunspot activity.
Disturbing Sun|Robert Shirley Richardson
They are connected in this way: that sunspot activity and S-Region activity certainly go together.
Disturbing Sun|Robert Shirley Richardson

A sunspot is a region on the Sun that is cooler than its surroundings.
Disturbing Sun|Robert Shirley Richardson
The sunspot cycle has appeared to average 11.2 years in length, and has been called the 11-year cycle.
Climatic Changes|Ellsworth Huntington

British Dictionary definitions for sunspot

sunspot

/ (ˈsʌnˌspɒt) /

noun

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

informal a sunny holiday resort

Australian a small cancerous spot produced by overexposure to the sun

Derived forms of sunspot

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

Scientific definitions for sunspot

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.

单词	sunspot
释义	sunspot [ suhn-spot ] / ˈsʌnˌspɒt / noun 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 of sunspot First recorded in1805–15; sun + spot OTHER WORDS FROM sunspot sunspotted, adjectivesun·spot·ted·ness, noun Words nearby sunspot Sunshine State, sunsick, sun sign, sunspace, sun spider, sunspot, sunspot cycle, sunspots, sun star, sunstone, sunstroke Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for sunspot And Bishop, Colossus, Warpath, Blink, Sunspot, Quiksilver, Stryker and Havoc will all be there too. The Most Anticipated Culture Events of 2014: ‘Inherent Vice,’ ‘Divergent,’ and More\|\|January 1, 2014\|DAILY BEAST There was still sadness in her breast but it was but a sunspot in the great glory of her happiness. The Short Cut\|Jackson Gregory It means you can only approximately predict the future course of sunspot activity. Disturbing Sun\|Robert Shirley Richardson They are connected in this way: that sunspot activity and S-Region activity certainly go together. Disturbing Sun\|Robert Shirley Richardson A sunspot is a region on the Sun that is cooler than its surroundings. Disturbing Sun\|Robert Shirley Richardson The sunspot cycle has appeared to average 11.2 years in length, and has been called the 11-year cycle. Climatic Changes\|Ellsworth Huntington British Dictionary definitions for sunspot sunspot / (ˈsʌnˌspɒt) / noun 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 informal a sunny holiday resort Australian a small cancerous spot produced by overexposure to the sun Derived forms of sunspot 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 Scientific definitions for sunspot 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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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