SINCE 1828
burn up
phrasal verb
burned up
or burnt up;
burning up;
burns up
Definition of burn up
: to be destroyed or cause (something) to be destroyed by fire
Most asteroids burn up upon entering the Earth's atmosphere. Wildfires have been raging across the region burning up acres of forest. Do we still need these old receipts? No, burn them up.
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Merriam-Webster unabridged
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