8 letters · 13 points in Scrabble
noun a base found in DNA and RNA and derived from pyrimidine; pairs with guanine
originAfter German Cytosin, equivalent to Ancient Greek κύτος (kútos) + -ine. Cytosine was discovered and named by the German biochemists Albrecht Kossel and Albert Neumann in 1894 when it was hydrolyzed from calf thymus tissues.
Etymology from Wiktionary, CC BY-SA 3.0