• Sis Definition & Synonyms
- (n.) Six. See Sise.
- (n.) A colloquial abbreviation of Sister.
• Si Definition & Synonyms
- () A syllable applied, in solmization, to the note B; more recently, to the seventh tone of any major diatonic scale. It was added to Guidos scale by Le Maire about the end of the 17th century.
• Sismometer Definition & Synonyms
- (n.) See Seismometer.
• Sistine Definition & Synonyms
- (a.) Of or pertaining to Pope Sixtus.