Wiktionary
trimethylsilyl chloride
n. (context organic compound English) The organosilicon compound (CH3)3SiCl used in the synthesis of many organic silicon compounds
Wikipedia
Trimethylsilyl chloride
Trimethylsilyl chloride, also known as chlorotrimethylsilane is an organosilicon compound ( silyl halide), with the formula (CH)SiCl, often abbreviated MeSiCl or TMSCl. It is a colourless volatile liquid that is stable in the absence of water. It is widely used in organic chemistry.