Si
/siː/noun
The seventh note of the diatonic musical scale, also called ti.
Did you know?The syllable was created from the initials of Sancte Ioannes, the Latin words concluding a medieval hymn used to teach singers musical notes.
Etymological Timeline
11th Century
Latin
Sancte Ioannes
““Saint John,” the final words of a hymn to John the Baptist”
16th Century
Italian
si
“A solmization syllable formed from the initials of Sancte Ioannes”
17th Century
Italian
si
“The seventh syllable of the ascending musical scale”
18th Century
English
si
“The seventh note of the diatonic scale”
Modern English
English
si
“The note corresponding to the seventh degree of the scale, also called ti”