noun
a mixture of powdered aluminum and a metal oxide that when ignited produces a high-temperature reaction used in welding and incendiary devices
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Thermite is a pyrotechnic composition of a metal powder and a metal oxide.
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I heard they used thermite to cut through the steel beams in that building.
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They say thermite is like magic when it comes to welding stuff together.
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His anger burned as hot as thermite, ready to explode at any moment.