solmization

noun

sol·​mi·​za·​tion ˌsäl-mə-ˈzā-shən 

: the act, practice, or system of using syllables to denote the tones of a musical scale

Word History

Etymology

French solmisation, from solmiser to sol-fa, from sol (from Medieval Latin) + mi (from Medieval Latin) + -iser -ize

First Known Use

1730, in the meaning defined above