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fulgurite - 5 dictionary results
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Based on the Random House Dictionary, © Random House, Inc. 2009.
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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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Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Fulgurite
Ful"gu*rite\, n. [L. fulguritus, p. p. of fulgurire to strike with lightning, fr. fulgur lightning: cf. F. fulgurite.] A vitrified sand tube produced by the striking of lightning on sand; a lightning tube; also, the portion of rock surface fused by a lightning discharge.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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fulgurite (f l'gyə-rīt', -gə-) Pronunciation Key
A slender, usually tubular body of glassy rock produced by lightning striking and then fusing dry sandy soil. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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fulgurite
a glassy silica mineral (lechatelierite or amorphous SiO2) fused in the heat from a lightning strike. Fulgurite is a common mineral with two varieties. Sand fulgurites, the more common, are branching, more or less cylindrical tubes that are about one centimetre (one-half inch) to several centimetres in diameter; they are commonly less than 3 metres (10 feet) long but sometimes reach 20 m (66 ft). The central cavity is usually lined with glass, and the exterior shows adhering sand grains. The shores of Lake Michigan and the Atlantic coast are typical sites
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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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gyəˌraɪt
l'gyə-rīt', -gə-)