Definition of silicone in English:



  • Any of a class of synthetic materials which are polymers with a chemical structure based on chains of alternate silicon and oxygen atoms, with organic groups attached to the silicon atoms. Such compounds are typically resistant to chemical attack and insensitive to temperature changes and are used to make rubber and plastics and in polishes and lubricants.

    [as modifier] ‘silicone rubber’
    ‘modern plastics and silicones’
    • ‘The effect of surface energy on adhesion is often studied by employing widely different materials, ranging from urethanes and epoxies (high energy), to silicones and fluorinated materials (low energy).’
    • ‘Among the plastics materials used for prostheses, silicone elastomers, also known as silicon rubber or silicones, have been particularly favoured as they combine flexibility with chemical and thus physiological inertness.’
    • ‘A bung, made of glass, plastic, rubber, earthenware, silicone, or wood, is a barrel's stopper, analogous to the cork of a bottle.’
    • ‘Depending on the type and location of the flashings, roofing tar or silicone or butyl rubber sealants can be used to seal small cracks and gaps.’
    • ‘Because they are lubricious, the silicones are easily inserted and removed with little discomfort and tissue trauma, and infection rates are thus decreased.’


  • Join or otherwise treat (something) with a silicone.

    ‘the raised planting shelf could be siliconed to the back of the tank’
    • ‘Then we superglued and siliconed the whole shebang together.’
    • ‘I even siliconed all the gaps and sized the tank using an impressive combination of manufacturers tables, data from the Bureau of Meteorology and sneaking a look at other tanks down our street.’
    • ‘A circular mirror from Myra Glass was attached to the back wall to reflect tall plants in a gold pot, while a gothic shaped mirror was siliconed directly to the wall above the fireplace.’
    • ‘While Mr. Nesbitt claimed the windows were siliconed shut, there was no such evidence as the holidaymaker had all the windows opened.’
    • ‘Carrier siliconed the unit onto the trolley's roof near a wire run.’