单词 | pyridine |
释义 | pyridine[ pir-i-deen, -din ] / ˈpɪr ɪˌdin, -dɪn / noun Chemistry.a colorless, flammable, liquid organic base, C5H5N, having a disagreeable odor, usually obtained from coal or synthesized from acetaldehyde and ammonia: used chiefly as a solvent and in organic synthesis. Origin of pyridineFirst recorded in 1850–55; pyr- + -id3 + -ine2 OTHER WORDS FROM pyridinepy·rid·ic [pahy-rid-ik], /paɪˈrɪd ɪk/, adjectiveWords nearby pyridinepyrexia, pyrgeometer, pyrheliometer, Pyribenzamine, pyric, pyridine, Pyridium, pyridostigmine bromide, pyridoxal, pyridoxal 5-phosphate, pyridoxamine Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for pyridineBritish Dictionary definitions for pyridinepyridine / (ˈpɪrɪˌdiːn) / nouna colourless hygroscopic liquid with a characteristic odour. It is a basic heterocyclic compound containing one nitrogen atom and five carbon atoms in its molecules and is used as a solvent and in preparing other organic chemicals. Formula: C 5 H 5 N Word Origin for pyridineC19: from pyro- + -id ³ + -ine ² 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 pyridinepyridine [ pĭr′ĭ-dēn′ ] n.A flammable, colorless or yellowish liquid base that results from the dry distillation of organic matter containing nitrogen, has a penetrating odor, and is used in analytical chemistry and in the manufacture of various drugs and vitamins. Other words from pyridinepy•rid′ic (pī-rĭd′ĭk) adj.The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for pyridinepyridine [ pĭr′ĭ-dēn′ ] Any of a class of organic compounds containing a six-member ring in which one of the carbon atoms has been replaced by a nitrogen atom. Pyridines include compounds used as water repellents, herbicides, and various drugs. The pyridine ring structure is also part of many larger compounds, including niacin and nicotine. The simplest of these compounds, a flammable, colorless or yellowish liquid base having a penetrating odor. It is used as a solvent and waterproofing agent and in the manufacture of various drugs and vitamins. Chemical formula: C5H5N. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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