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- n. Plural form of semi-metal.
Sorry, no etymologies found.
"Yes," added the other; "and of the Roman emperors as low as Severus; besides a great deal of the heathen mythology, and all the metals, semi-metals, planets, and distinguished philosophers."
Slide 16: Metalloids Also called semi-metals Display properties of both metals and non-metals Include silicon, germanium, arsenic, antimony and tellurium