silicon

noun

sil·​i·​con ˈsi-li-kən How to pronounce silicon (audio) ˈsi-lə-ˌkän How to pronounce silicon (audio)
: a tetravalent nonmetallic element with atomic number 14 that occurs combined as the most abundant element next to oxygen in the earth's crust and is used especially in semiconductors, in ferrosilicon for steelmaking, and in other alloys
often used before another noun
silicon chips
silicon carbide
see Chemical Elements Table

Examples of silicon in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
This was slated to include investment in a new factory in Texas, a manufacturing academy, as well as spending in AI and silicon engineering. Callum Sutherland, Time, 23 May 2025 The idea, which seemed impossible to many two decades ago, was to create large amounts of tiny rays of extreme ultraviolet light, projecting it through masks with increasingly small chip designs, onto wafers of silicon treated with photoresist chemicals. Katie Tarasov, CNBC, 22 May 2025 The rest of the silicon is no slouch, with a speedy Core Ultra 9 processor coupled with 32GB of system memory. K. Thor Jensen, PC Magazine, 21 May 2025 Can that occur from sending a chunk of metal and silicon—even one that is boxcar-size or bigger—into a fusion furnace? HAROLD SHAW PENOBSCOT, ME. Aaron Shattuck, Scientific American, 20 May 2025 See All Example Sentences for silicon

Word History

Etymology

New Latin silica + English -on (as in carbon)

First Known Use

1814, in the meaning defined above

Time Traveler
The first known use of silicon was in 1814

Cite this Entry

“Silicon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/silicon. Accessed 4 Jun. 2025.

Kids Definition

silicon

noun
sil·​i·​con ˈsil-i-kən How to pronounce silicon (audio)
ˈsil-ə-ˌkän
: a nonmetallic element that occurs combined as the most abundant element after oxygen in the earth's crust and is used especially in alloys and electronic devices see element

Medical Definition

silicon

noun
sil·​i·​con ˈsil-i-kən How to pronounce silicon (audio) ˈsil-ə-ˌkän How to pronounce silicon (audio)
: a tetravalent nonmetallic element that occurs combined as the most abundant element next to oxygen in the earth's crust and is used especially in alloys
symbol Si
see Chemical Elements Table

More from Merriam-Webster on silicon

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