pyrimidine[pə rim′ə dēn′, pī-; pir′ə mə dēn′]
pyrimidine definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- a colorless, liquid, crystalline organic compound, CHN, the fundamental form of a group of bases, some of which are constituents of nucleic acid
- any of several basic substances produced by the decomposition of nucleoproteins and having a pyrimidine-type molecule, as thymine, cytosine, or uracil
Origin: German pyrimidin ; from pyridin: see pyridine
pyrimidine definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
- A single-ringed, crystalline organic base, C4H4N2, that forms uracil, cytosine, or thymine and is the parent compound of many drugs, including the barbiturates.
- Any of several organic compounds derived from or structurally related to pyrimidine, especially the nitrogen bases uracil, cytosine, and thymine.
Origin: Alteration of pyridine.
pyrimidine - Medical Definition
The American Heritage® Medical Dictionary Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
- A crystalline organic base that is the parent substance of various biologically important derivatives.
- Any of several basic compounds derived from or structurally related to pyrimidine, especially the nucleic acid constituents uracil, cytosine, and thymine.
pyrimidine - Science Definition
Any of a group of organic compounds having a single six-member ring in which the first and third atoms are nitrogen and the rest are carbon. Pyrimidines include the bases cytosine, thymine, and uracil, which are components of DNA and RNA. Pyrimidine rings are also components of several larger compounds, such as thiamine and some synthetic barbiturates.