pyridine

  

pyr·i·dine

[pir-i-deen, -din]
noun Chemistry.
a colorless, flammable, liquid organic base, C 5 H 5 N, having a disagreeable odor, usually obtained from coal or synthesized from acetaldehyde and ammonia: used chiefly as a solvent and in organic synthesis.
Origin:
1850–55; pyr- + -id3 + -ine2

Related forms
py·rid·ic [pahy-rid-ik] , adjective
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Collins
World English Dictionary
pyridine (ˈpɪrɪˌdiːn) [Click for IPA pronunciation guide]
 
—n
a 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: C5H5N
 
[C19: from pyro- + -id³ + -ine²]

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00:10
Pyridine is always a great word to know.
So is flibbertigibbet. Does it mean:
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a chattering or flighty, light-headed person.
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American Heritage
Medical Dictionary

pyridine pyr·i·dine (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.

py·rid'ic (pī-rĭd'ĭk) adj.

The American Heritage® Stedman's Medical Dictionary
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American Heritage
Science Dictionary
pyridine   (pĭr'ĭ-dēn')  Pronunciation Key 

  1. Any of a class of organic compounds containing a six-member ring in which one of the carbon atoms has been replaced by a nitrogen atom.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.

  2. 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 © 2002. Published by Houghton Mifflin. All rights reserved.
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