thymine

noun

thy·​mine ˈthī-ˌmēn How to pronounce thymine (audio)
: a pyrimidine base C5H6N2O2 that is one of the four bases coding genetic information in the polynucleotide chain of DNA compare adenine, cytosine, guanine, uracil

Examples of thymine in a Sentence

Recent Examples on the Web Adenine pairs with thymine, and cytosine with guanine; a short strand made up, for example, of ATCG would bind to TAGC and not other sequences. IEEE Spectrum, 26 Sep. 2023 The molecules are called bases and are represented by the letters A (adenine), T (thymine), G (guanine), and C (cytosine). IEEE Spectrum, 22 Feb. 2016 These symbols represent the four basic chemical letters, or bases, the body uses to form DNA--guanine, cytosine, adenine and thymine. Razib Khan, Discover Magazine, 30 Dec. 2010 Adenine bonds with thymine, and cytosine bonds with guanine. Olivia Munson, USA TODAY, 14 Feb. 2023 Ninety percent of the thymine in their DNA was replaced by chlorouracil. Carl Zimmer, Discover Magazine, 6 July 2011 Stuck to every sugar is a base—the As (adenine), Gs (guanine), Cs (cytosine), and Ts (thymine). Sarah Scoles, Scientific American, 13 Jan. 2023 Four chemical bases — adenine, guanine, cytosine, and thymine — bond with hydrogen to make base pairings. Emilie Le Beau Lucchesi, Discover Magazine, 15 Apr. 2022 Just four molecules make up all of our genes: Adenine (A), which can only pair with thymine (T), and cytosine (C), which can only pair with guanine (G). Nathaniel Scharping, Discover Magazine, 9 Dec. 2020 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'thymine.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

International Scientific Vocabulary, from New Latin thymus

First Known Use

1894, in the meaning defined above

Time Traveler
The first known use of thymine was in 1894

Dictionary Entries Near thymine

Cite this Entry

“Thymine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thymine. Accessed 7 Dec. 2023.

Kids Definition

thymine

noun
thy·​mine ˈthī-ˌmēn How to pronounce thymine (audio)
: a pyrimidine base that is one of the bases coding hereditary information in DNA compare adenine, cytosine, guanine, uracil

Medical Definition

thymine

noun
thy·​mine ˈthī-ˌmēn How to pronounce thymine (audio)
: a pyrimidine base C5H6N2O2 that is one of the four bases coding genetic information in the polynucleotide chain of DNA compare adenine, cytosine, guanine, uracil

More from Merriam-Webster on thymine

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