from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A pyrimidine base, C4H5N3O, that is the constituent of DNA and RNA involved in base pairing with guanine.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A base, C4H5N3O, which pairs with guanine in DNA and RNA.
from the GNU version of the Collaborative International Dictionary of English
- n. A pyrimidine (C4H5N3O) which is one of the four major basic components of DNA and RNA in most organisms, forming glyosides with ribose and deoxyribose. It is the basic component of cytidine, deoxycytidine, cytosine, cytidine monophosphate, and derivatives of those compounds.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a base found in DNA and RNA and derived from pyrimidine; pairs with guanine
cyt(o)- + (rib)os(e) + -ine2.(American Heritage® Dictionary of the English Language, Fourth Edition)
After German Cytosin, from cyto- + -ose + -ine. (Wiktionary)