- a pyrimidine base, C5H6N2O2, that is one of the principal components of DNA, in which it is paired with adenine. Symbol: T
Origin of thymine
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Historical Examples of thymine
The difference between these two bases is one methyl group: thymine is a 5-methyluracil.
Of the four basic components on the right, thymine occurs in the nucleic acid from the thymus gland.
- a white crystalline pyrimidine base found in DNA. Formula: C 5 H 6 N 2 O 2
Word Origin for thymine
C19: from thymic (see thymus) + -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
Word Origin and History for thymine
Online Etymology Dictionary, © 2010 Douglas Harper
- A pyrimidine base that is an essential constituent of DNA.
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- A pyrimidine base that is a component of DNA. It forms a base pair with adenine. Chemical formula: C5H6N2O2.
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