Etymology
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decrepitation (n.)

"act of snapping or bursting with a crackling noise when heated," 1660s, from Latin decrepitationem (nominative decrepitatio), from de- + crepitatus, past participle of crepitare "to crack, break" (see raven).

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Definitions of decrepitation

decrepitation (n.)
the crackling or breaking up of certain crystals when they are heated;
From wordnet.princeton.edu