silicone

Etymology

silicon + -one. Originally obtained by the attempted synthesis of the silicon equivalent of a ketone.

noun

1. (chemistry) Any of a class of inert, semi-inorganic polymeric compounds (polysiloxanes), that have a wide range of thermal stability and extreme water repellence, used in a very wide range of industrial applications, and in prosthetic replacements for body parts.
   [H]e had little time or respect for the rich skip bitches who were his neighbours, useless fake-tanned women with plastic smiles and silicone tits who spent their husbands' money on afternoon teas, endless shopping and personal trainers. 2008, Christos Tsiolkas, The Slap, London: Atlantic Books, page 93

verb

1. (transitive) To join or treat (something) with a silicone-based product.
   silicone the bathtub to the tile
   Structural glazing or siliconing of window units is, according to Donald F. Kelly, Jr., president of AMPAT, the bonding of glass to a metal frame. 1984, United States National Labor Relations Board, Decisions and Orders of the National Labor Relations Board, page 963
2. (informal, transitive) To enhance or reconstruct (a body part) with a prosthesis containing silicone.
   The next girl, with huge, perfectly spherical, siliconed breasts perched high on her slender chest, got the loudest roar. ‘Oh, there are two things I like about her!’ shouted the DJ. ‘How about you, boys?’ 2011, Natasha Walter, Living Dolls: The Return of Sexism, page 27