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.
The docking station will work with Apple silicon MacBooks and Mac minis. — Mark Sparrow, Forbes.com, 11 May 2025 The addition of a silicon tracker layer on top of the detector would increase the amount of data from the $2 billion physics experiment over the next five years by a factor of three. — Eric Berger, ArsTechnica, 7 May 2025 Marvell will host a webinar on custom silicon instead. — Jeff Marks, CNBC, 7 May 2025 Beyond tariffs, Washington has tightened trade on critical items such as advanced silicon chips. — Danielle Kaye, New York Times, 21 Apr. 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

Phrases Containing silicon

Browse Nearby Words

silicomanganese
silicon
silicon bronze
See all Nearby Words

Cite this Entry

“Silicon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/silicon. Accessed 14 May. 2025.

Copy Citation

Share

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

Nglish: Translation of silicon for Spanish Speakers

Britannica.com: Encyclopedia article about 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!

Popular in Grammar & Usage

See More

Using Bullet Points ( • )

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)

Words You Always Have to Look Up

Democracy or Republic: What's the difference?

Every Letter Is Silent, Sometimes: A-Z List of Examples
See More

Popular in Wordplay

See More

Flower Etymologies For Your Spring Garden

'Za' and 9 Other Words to Help You Win at SCRABBLE

8 Words for Lesser-Known Musical Instruments

Birds Say the Darndest Things

10 Words from Taylor Swift Songs (Merriam's Version)
See More

Popular

See More

Using Bullet Points ( • )

Flower Etymologies For Your Spring Garden

'Za' and 9 Other Words to Help You Win at SCRABBLE
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Word Game Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
Missing Letter A daily crossword with a twist
crayons-in-a-circle
Guess the Color Quiz Questions that use the whole box of crayons.
See All