单词 | sulfur |
释义 | sulfur[ suhl-fer ] / ˈsʌl fər / nounAlso especially British, sulphur. Chemistry. a nonmetallic element that exists in several forms, the ordinary one being a yellow rhombic crystalline solid, and that burns with a blue flame and a suffocating odor: used especially in making gunpowder and matches, in medicine, in vulcanizing rubber, etc. Symbol: S; atomic weight: 32.064; atomic number: 16; specific gravity: 2.07 at 20° C. sulphur (def. 2). Origin of sulfur1300–50; Middle English sulphur<Latin sulpur, sulphur, sulfur brimstone, sulfur Words nearby sulfursulfonylurea, sulfosalicylic acid, sulfosalicylic acid turbidity test, sulfotransferase, sulfoxide, sulfur, sulfur-35, sulfurate, sulfurated potash, sulfur bacteria, sulfur butterfly Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for sulfurBritish Dictionary definitions for sulfursulfur / (ˈsʌlfə) / nounthe US preferred spelling of sulphur 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 Medical definitions for sulfursulfur n. Symbol SA yellow nonmetallic element occurring widely in nature in several free and combined allotropic forms and used in the manufacture of pharmaceuticals and many sulfur compounds, especially sulfuric acid. Atomic number 16. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for sulfursulfur SA pale-yellow, brittle nonmetallic element that occurs widely in nature, especially in volcanic deposits, minerals, natural gas, and petroleum. It is used to make gunpowder and fertilizer, to vulcanize rubber, and to produce sulfuric acid. Atomic number 16; atomic weight 32.066; melting point (rhombic) 112.8°C; (monoclinic) 119.0°C; boiling point 444.6°C; specific gravity (rhombic) 2.07; (monoclinic) 1.957; valence 2, 4, 6. See Periodic Table. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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