Dictionary and Thesaurus

Definition of Si

• () 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.

Synonyms of Si

• Silicon
• Si
• Atomic Number 14
• Systeme International D'unites
• Systeme International
• SI System
• SI
• SI Unit
• International System Of Units
• International System
• Ti
• Te

Antonyms of Si

Homophones of Si

• C
• C.
• Sea
• See
• Sie
• Sieh