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.
These include water vapor, carbon monoxide, methane and, for the first time ever in a planetary atmosphere, silicon monoxide. Sharmila Kuthunur, Space.com, 4 June 2025 Take complex, multiscale systems like metasurfaces or silicon photonics interconnects. Yujie Huang, Forbes.com, 2 June 2025 When 20 percent of your jobs depend on an auto industry that's slashing human workers for silicon chips... Suzanne Blake, MSNBC Newsweek, 29 May 2025 As lines are drawn in silicon rather than sand, forward-thinking investors are discovering that technological sovereignty and shareholder value have become inextricably linked — perhaps the most significant investment paradigm shift of our generation. Katrina Rosseini, Sun Sentinel, 28 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 7 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

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!