Bible Dictionaries
Si

Webster's Dictionary

A syllable applied, in solmization, to the note B; more recently, to the seventh tone of any major diatonic scale. It was added to Guido's scale by Le Maire about the end of the 17th century.

Bibliography Information
Webster, Noah. Entry for 'Si'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​s/si.html. 1828.