1 ablator | Definition of ablator
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ablator

noun
ab·​la·​tor | \ aˈblātə(r)\
plural -s

Definition of ablator

: a material that provides thermal protection (as to the outside of a spacecraft on reentry) by ablating

First Known Use of ablator

1961, in the meaning defined above

History and Etymology for ablator

ablate + -or entry 1

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