aluminum gallium arsenide

noun

Definition of aluminum gallium arsenide 

: a semiconductor AlGaAs sometimes used in the manufacture of laser diodes The most promising results were found in the third and fourth wafers of gallium arsenide and aluminum gallium arsenide used as the raw material in the experiment, Ignatiev said. —Mark Carreau, Houston Chronicle, 7 Dec. 1995

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First Known Use of aluminum gallium arsenide

1975, in the meaning defined above

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The first known use of aluminum gallium arsenide was in 1975

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