WordReference Random House Unabridged Dictionary of American English © 2026
gal′lium ar′senide, [Chem.]
  1. Chemistrya crystalline and highly toxic semiconductor, GaAs, used in light-emitting diodes, lasers, and electronic devices.
  • 1960–65

'gallium arsenide' also found in these entries (note: many are not synonyms or translations):
gallium - light-emitting diode

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