GAAS

Gallium arsenide (GaAs) is a compound of two elements, gallium and arsenic. It is an important semiconductor and is used to make devices such as microwave frequency integrated circuits (ie, MMICs), infrared light-emitting diodes, laser diodes and solar cells.
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Generally Accepted Auditing Standards, or GAAS, are ten auditing standards, developed by the AICPA, consisting of general standards, standards of field work, and standards of reporting, along with interpretations. They were developed by the AICPA in 1947 and have undergone minor changes since then.
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n. gauze, netting

see Gallium Arsenide