si

Other forms of si

plural

sis·

Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.

Questions about si

What does si mean?

si means "a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors". That is the primary sense; the word has 3 in total, listed in full on this page.

How many syllables are in si?

si has 1 syllable: si. In IPA it is /ˈsi/.

What is another word for si?

Close synonyms include silicon, atomic number 14, Systeme International d'Unites, Systeme International, SI system. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is si a common word?

si is banded "Common" — everyday vocabulary in speech and writing. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.

What rhymes with si?

37 words rhyme with si. Rhymes are matched on the phonemes from the last stressed vowel onward, which is the definition a reader has in their head.