silicone

[ sil-i-kohn ]
/ ˈsɪl ɪˌkoʊn /

noun Chemistry.

any of a number of polymers containing alternate silicon and oxygen atoms, as (–Si–O–Si–O–)n, whose properties are determined by the organic groups attached to the silicon atoms, and that are fluid, resinous, rubbery, extremely stable in high temperatures, and water-repellent: used as adhesives, lubricants, and hydraulic oils and in electrical insulation, cosmetics, etc.

RELATED WORDS


Nearby words

  1. silicon tetrachloride,
  2. silicon tetrafluoride,
  3. silicon tetrahydride,
  4. silicon valley,
  5. silicon-controlled rectifier,
  6. silicone rubber,
  7. siliconized,
  8. silicoproteinosis,
  9. silicosiderosis,
  10. silicosis

Origin of silicone

First recorded in 1905–10; silic(on) + -one

Can be confusedsilicon silicone

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for silicone


British Dictionary definitions for silicone

silicone

/ (ˈsɪlɪˌkəʊn) /

noun

chem
  1. any of a large class of polymeric synthetic materials that usually have resistance to temperature, water, and chemicals, and good insulating and lubricating properties, making them suitable for wide use as oils, water-repellents, resins, etc. Chemically they have alternate silicon and oxygen atoms with the silicon atoms bound to organic groups
  2. (as modifier)silicone rubber
See also siloxane
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for silicone

silicone

n.

coined 1863 in German from silico-, comb. form indicating the presence of silicon, + -one.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for silicone

silicone

[ sĭlĭ-kōn′ ]

n.

Any of a group of silicon compounds in solid, liquid, or gel form, characterized by wide-range thermal stability, high lubricity, extreme water repellence, and physiological inertness and used in many medical products, including surgical implants and dental impression materials.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for silicone

silicone

[ sĭlĭ-kōn′ ]

Any of a class of chemical compounds consisting of long chains of alternating silicon and oxygen atoms, with two organic radicals, typically a methyl (CH3) and a phenyl (C6H5) group, attached to each silicon atom. Silicones are very stable and resist the effects of water, heat, and oxidizing agents. They are used to make adhesives, lubricants and synthetic rubber.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.