Si

Webster's Dictionary of the English Language

·- 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.

Related Words

si
sī (orig. and ante-class. form seī), conj. [from a pronominal stem = Gr. ἑ; Sanscr. sva-, self; cf...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
si
sī (1) (old, sei), conj.SOVO-, as a conditional particle.—With indic., in conditions assumed as tru...

An Elementary Latin Dictionary