n.
Pronunciation: ' a-d ə - ˌ n ē n
Function: noun
Etymology: International Scientific Vocabulary; from its presence in glandular tissue
Date: 1885
: a purine base C 5 H 5 N 5 that codes hereditary information in the genetic code in DNA and RNA ― compare CYTOSINE , GUANINE , THYMINE , URACIL