What is "tetramethylsilane"

n. (context organic compound English) The organosilicon compound Si(CH₃)₄ that has several industrial applications and is used as a reference standard in NMR spectroscopy.

Tetramethylsilane (abbreviated as TMS) is the organosilicon compound with the formula Si(CH). It is the simplest tetraorganosilane. Like all silanes, the TMS framework is tetrahedral. TMS is a building block in organometallic chemistry but also finds use in diverse niche applications.