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Definition of silicone

silicone

/ˈsɪl.əˌkoʊn/
sil · i · cone
Plural:silicones
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silicone Lexical Profile

silicone Game Scores & Validity

• noun

1

Any of a class of synthetic polymers made up of repeating chains of silicon and oxygen atoms combined with organic groups, valued for their heat resistance and water repellency and widely used in sealants, adhesives, lubricants, cookware, and medical implants.

Example

"The plumber applied a bead of waterproof silicone around the edge of the sink to prevent leaks."

Synonyms
View all synonyms for silicone

Word Nuance & Usage

Do not confuse 'silicone' with 'silicon': 'silicon' is a naturally occurring chemical element (a hard metalloid used in computer microchips and solar cells), whereas 'silicone' is a synthetic polymer containing silicon, oxygen, and carbon used to make flexible rubbers, sealants, lubricants, and medical implants.

• Nearby Words

silhouette
silica
silicon
silicone
silk
silk tree
silken

Word Origin & Etymology

Coined in 1901 by British chemist Frederic Stanley Kipping from 'silicon' + '-one' (from 'ketone'), because its empirical formula resembled that of an organic ketone.

Cite this Entry

Wordmom. (2026). Definition of Silicone. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/silicone
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