[ad-n-in, -een, -ahyn]
Biochemistry. a purine base, C 5 H 5 N 5 , one of the fundamental components of nucleic acids, as DNA, in which it forms a base pair with thymine, and RNA, in which it pairs with uracil. Symbol: A

1880–85; < German Adenin; see aden-, -ine2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
adenine (ˈædənɪn, -ˌniːn, -ˌnaɪn)
a purine base present in tissues of all living organisms as a constituent of the nucleic acids DNA and RNA and of certain coenzymes; 6-aminopurine. Formula: C5H5N5; melting pt: 360--365°C

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

crystaline base, 1885, coined by Ger. physiologist/chemist Albrecht Kossel (1853-1927) from Gk. aden- "gland" + chem. suffix -ine. So called because it was derived from the pancreas.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

adenine ad·e·nine (ād'n-ēn', -ĭn)
Abbr. A
A purine base that is a constituent of DNA and RNA and an important energy transport and storage component in cellular metabolism.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
adenine   (ād'n-ēn')  Pronunciation Key 
A purine base that is a component of DNA and RNA, forming a base pair with thymine in DNA and with uracil in RNA. Adenine is also part of other biologically important compounds, such as ATP, NAD, and vitamin B-12, and occurs in tea. Chemical formula: C5H5N5.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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