| a crystalline and highly toxic semiconductor, GaAs, used in light-emitting diodes, lasers, and electronic devices. |
| gallium arsenide n. A dark-gray crystalline compound, GaAs, used in transistors, solar cells, and semiconducting lasers. |
| gallium arsenide
A dark-gray crystalline compound used in transistors, solar cells, and semiconductor lasers. Chemical formula: GaAs. |