Noun
English Wikipedia has an article on:polydimethylsiloxaneWikipedia
polydimethylsiloxane (plural polydimethylsiloxanes)
(chemistry) The simplest silicone, being a polymer having a repeat unit of -Si(CH3)2-O- ; its properties depend on the degree of polymerization and range from that of an oil to a plastic
Synonym: PDMS