noun
A material used to absorb energy from a moving object, especially in spacecraft during reentry into the atmosphere.
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The spacecraft's heat shield is designed to act as an ablator, protecting it from the intense heat of reentry.
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The ablator on the rocket helps prevent it from getting too hot during launch.
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Make sure the ablator is in good condition before takeoff, or we could be in trouble.
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In a stressful situation, she acted as an emotional ablator, shielding her friends from the negativity around them.