indigogen Chem.
(ˈɪndɪgəʊdʒɛn)
[f. indigo + -gen, taken as ‘producing’.]
An obsolete name for indigo-white.
| 1838 T. Thomson Chem. Org. Bodies 375 Indigogen dissolves in alkalies. 1841 Brande Chem. 1122 The probable composition of white deoxidized indigo, or indigogene. 1878 Kingzett Anim. Chem. 233 Indigo blue is derived from a colourless constituent of the urine or indigogen. |