Webster's Revised Unabridged Dictionary · 1913

Solmization

Solmization , noun

[French solmisation, from solmiser to sol-fa; -- called from the musical notes sol, mi. See Sol-fa.]

(Music) The act of sol-faing.
Ut queant laxis Resonare fibris Mira gestorum Famuli tuorum Solve polluti Labii reatum, Sancte Joannes.