silicon
noun
sil·i·conˈsi-li-kən 
ˈsi-lə-ˌkän
ˈsi-lə-ˌkän :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, inferrosilicon for steelmaking, and in other alloys—often used before another noun
silicon chips
silicon carbide
seeChemical Elements TableExamples ofsilicon in a Sentence
Recent Examples on the WebPerovskites have long been touted as a potential replacement forsilicon in solar cells, LEDs and quantum technologies.—
Prabhat Ranjan Mishra,Interesting Engineering, 16 Nov. 2025Semiconductors, such assilicon, are essential materials in most electronic devices and advance performance in fields ranging from health care and the military to computing and transportation, according to the university.—Ryan Anderson,Arkansas Online, 15 Nov. 2025This Multivitamin + Hair Growth formulation taps Lustriva, a compound that combines biotin,silicon, arginine, and inositol, among other hair health-boosting ingredients, that’s specifically meant to address thinning and encourage thicker, fuller hair.—Lisa Desantis,Glamour, 15 Nov. 2025The wireless headset, powered by Qualcommsilicon and due next year, can stream games from a PC or run Windows and Android games locally.—Andrew Nusca,Fortune, 13 Nov. 2025See All Example Sentences forsilicon
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.
Prabhat Ranjan Mishra,Interesting Engineering, 16 Nov. 2025Semiconductors, such assilicon, are essential materials in most electronic devices and advance performance in fields ranging from health care and the military to computing and transportation, according to the university.—Ryan Anderson,Arkansas Online, 15 Nov. 2025This Multivitamin + Hair Growth formulation taps Lustriva, a compound that combines biotin,silicon, arginine, and inositol, among other hair health-boosting ingredients, that’s specifically meant to address thinning and encourage thicker, fuller hair.—Lisa Desantis,Glamour, 15 Nov. 2025The wireless headset, powered by Qualcommsilicon and due next year, can stream games from a PC or run Windows and Android games locally.—Andrew Nusca,Fortune, 13 Nov. 2025See All Example Sentences forsiliconWord History
Etymology
New Latinsilica + English-on (as incarbon)
First Known Use
1814, in the meaning definedabove
Phrases Containingsilicon
Browse Nearby Words
Cite this Entry
“Silicon.”Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/silicon. Accessed 26 Nov. 2025.
Copy CitationKids Definition
silicon
nounsil·i·conˈsil-i-kən
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 seeelement
Medical Definition
silicon
nounsil·i·conˈsil-i-kən ˈsil-ə-ˌkän
ˈsil-ə-ˌkän :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—symbolSi seeChemical Elements Table
More from Merriam-Webster onsilicon
Nglish:Translation ofsilicon for Spanish Speakers
Britannica.com:Encyclopedia article aboutsilicon
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