Definition of "siloxane" []

• Any of a class of organic or inorganic chemical compounds of silicon, oxygen, and usually carbon and hydrogen, based on the structural unit R2SiO, where R is an alkyl group, usually methyl. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Cyclomethicone and ingredients ending in "siloxane": Used in cosmetics to soften, smooth and moisten, these compounds can irritate the skin, eyes and lungs."
• "The Institute carried out alternatives assessments on one product based on n-propyl bromide (nPB), a product based on a volatile methyl siloxane (VMS), and two hydrochlorofluorocarbons (HCFCs)."
• "A-Tech Masonry and Brick Sealer-water-based silane/siloxane water repellent HG Marble and Natural Stone Protector - Invisible coating to protect natural stone"