1866 H. E. Roscoe xxiii. 206 The oxides of titanium correspond to those of tin; viz. titanous and titanic oxides.
1868 H. Watts V. 842 Titanous oxide dissolves in acids, forming violet solutions.
1975 44 293 An aqueous suspension of hydrous titanous oxide.
1991 61 98 The dark-colored hydrous titanous oxide formed was then oxidized to the white titanic form by bubbling oxygen gas through the suspensions.