Noun
gallium arsenide (uncountable)
(inorganic chemistry) A binary compound of gallium and arsenic, GaAs, used as a semiconductor, especially in light-emitting diodes.
Gallium arsenide (GaAs) and gallium nitride (GaN) used in electronic components represented about 98% of the gallium consumption in the United States in 2007. Source: Internet
Gallium arsenide is used in some integrated circuits (ICs) and photovoltaic devices. Source: Internet