<p><strong>Noun:</strong></p><ul><li>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.</li><li>Fluid, resinous, rubbery, extremely stable in high temperatures, and water-repellent.</li><li>Used as adhesives, lubricants, hydraulic oils, and in electrical insulation, cosmetics, etc.</li></ul>