[{"Bold_text": "noun", "List Items": ["any of a number of polymers containing alternate silicon oxygen atoms, as (–Si–O–Si–O–)n,whose properties are determined by the organic groups attached to the silicon , 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."]}]