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si definition

si (sē)

noun

Music ti
see also solfeggio

Etymology: < ML S(ancte) I(ohannes): see gamut

SI definition

SI

Etymology: Fr S(ystème) I(nternational)

International System of weights and measures, using the metric system augmented by scientific units used in technology
Si1 definition

Si

Bible Sirach (Ecclesiasticus)
Si2 definition

Si

silicon

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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