noun
SI
see
noun
1
In solfège, the syllable used for the seventh note of a major scale.
"The scale runs do, re, mi, fa, sol, la, si, do."
How to Use SI
Learner’s notesIn plain EnglishThe musical syllable for the seventh note of the scale, also written "ti."
Word Forms
sis plural
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The scale runs do, re, mi, fa, sol, la, _____, do.
Etymology
Borrowed from French, from the International System of Units abbreviation "SI."