betacyanin
(ˌbiːtəˈsaɪənɪn) n (Botany) any one of a group of red nitrogenous pigments found in certain plants, such as beetroot
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014