There are 3 definitions of si in English:

si

Syllabification: si

noun

Music
another term for ti.

Origin

early 18th century: from the initial letters of Sancte Iohannes, the closing words of a Latin hymn (see solmization).

More definitions of si

Definition of si in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day conspicuous
Pronunciation: kənˈspɪkjʊəs
adjective
clearly visible

There are 3 definitions of si in English:

Si

Syllabification: Si

symbol

The chemical element silicon.

More definitions of si

Definition of Si in:

There are 3 definitions of si in English:

SI

Syllabification: SI

abbreviation

1The international system of units of measurement.
[from French Système International]
1.1 Law Statutory instrument.

More definitions of si

Definition of SI in: