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solar flare

 - 7 dictionary results

solar flare

–noun Astronomy.
flare (def. 21).

Origin:
1935–40

flare

[flair] verb, flared, flar⋅ing, noun
–verb (used without object)
1. to burn with an unsteady, swaying flame, as a torch or candle in the wind.
2. to blaze with a sudden burst of flame (often fol. by up): The fire flared up as the paper caught.
3. to start up or burst out in sudden, fierce activity, passion, etc. (often fol. by up or out): Tempers flared at the meeting. Violence flared up in a new section of the city.
4. to shine or glow.
5. to spread gradually outward, as the end of a trumpet, the bottom of a wide skirt, or the sides of a ship.
–verb (used with object)
6. to cause (a candle, torch, etc.) to burn with a swaying flame.
7. to display conspicuously or ostentatiously.
8. to signal by flares of fire or light.
9. to cause (something) to spread gradually outward in form.
10. Metallurgy. to heat (a high-zinc brass) to such a high temperature that the zinc vapors begin to burn.
11. to discharge and burn (excess gas) at a well or refinery.
–noun
12. a flaring or swaying flame or light, as of torches in the wind.
13. a sudden blaze or burst of flame.
14. a bright blaze of fire or light used as a signal, a means of illumination or guidance, etc.
15. a device or substance used to produce such a blaze of fire or light.
16. a sudden burst, as of zeal or of anger.
17. a gradual spread outward in form; outward curvature: the flare of a skirt.
18. something that spreads out.
19. Optics. unwanted light reaching the image plane of an optical instrument, resulting from extraneous reflections, scattering by lenses, and the like.
20. Photography. a fogged appearance given to an image by reflection within a camera lens or within the camera itself.
21. Also called solar flare. Astronomy. a sudden and brief brightening of the solar atmosphere in the vicinity of a sunspot that results from an explosive release of particles and radiation.
22. Football. a short pass thrown to a back who is running toward a sideline and is not beyond the line of scrimmage.
23. Television. a dark area on a picture tube caused by variations in light intensity.
24. flare out or up, to become suddenly enraged: She flares up easily.

Origin:
1540–50; orig. meaning: spread out, said of hair, a ship's sides, etc.; cf. OE flǣre either of the spreading sides at the end of the nose


1. flame. 3. erupt, explode, flash, blaze, flame. 13. flash.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To solar flare
solar flare  
n.  A sudden eruption of magnetic energy released on or near the surface of the sun, usually associated with sunspots and accompanied by bursts of electromagnetic radiation and particles. Ultraviolet and x-ray radiation from solar flares often induce electromagnetic disturbances in the earth's atmosphere.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

flare  (v.)
c.1550, originally "spread out" (hair), of unknown origin, perhaps from Du. vlederen. The noun meaning "bright, unsteady light" is 1814, from the verb, which led to the sense of "signal fire" (1883). The notion of "spreading out in display" is behind the notion of "spreading gradually outward" (1644). Flare-up "a sudden burst" is from 1837. Flares "flared trousers" is from 1964.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: 2flare
Function: noun
1 : a sudden outburst or worsening of a disease flares in rheumatoid arthritis—Emergency Medicine> —see FLARE-UP
2 : an area of skin flush resulting from andspreading out from a local center of vascular dilation and hyperemia flare>
3 : the presence of floating particles in the fluid of the anterior chamber ofthe eye called also aqueous flare
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

flare (flâr)
n.
An area of redness on the skin surrounding the primary site of infection or irritation.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
solar flare  
A sudden eruption of hydrogen gas in the chromosphere of the Sun, usually associated with sunspots. Solar flares may last between several hours and several days, and have temperatures ranging from 20 to 100 million degrees K. The energy of a solar flare, which consists primarily of charged particles and x-rays, is comparable to tens of millions of hydrogen bombs, but is less than one-tenth the total energy emitted by the Sun every second. First observed in 1859, solar flares dramatically affect the Sun's weather and the solar wind, and are correlated with the appearance of auroras on the Earth. See also prominence.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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