What is "trimethylgallium"

n. (context organic compound English) The organometallic compound, (CH₃)₃Ga, used in vapour-phase epitaxy for the manufacture of semiconductors

Trimethylgallium, Ga(CH), often abbreviated to TMG or TMGa, is the preferred metalorganic source of gallium for metalorganic vapour phase epitaxy (MOVPE) of gallium-containing compound semiconductors, such as GaAs, GaN, GaP, GaSb, InGaAs, InGaN, AlGaInP, InGaP and AlInGaNP.