The chemical element titanium.
1(in solmization) the seventh note of a major scale.
- ‘The seven tones of the major scale are named doh, ray, me, fah, soh, lah and te.’
- 1.1The note B in the fixed-do system.
- ‘So the half steps E-F and B-C use the syllables mi-fa and ti-do.’
Mid 19th century: alteration of si, adopted to avoid having two notes ( sol and si) beginning with the same letter (see solmization).