guanine guaniferous • guanize · · · Info · Definitions · Synonyms · Characters · · guanine · · Text Latin · · Script 7 · · Length Definitions · · · (noun) a purine base found in DNA and RNA; pairs with cytosine. Synonyms: G. · · Noun Definition 1 Synonyms · · · g · · Synonym 1 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 n latin small letter n U+006E u latin small letter u U+0075