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Classic usage
Reading level: hard
Estimated CEFR level: C1 — Advanced
Estimated from word frequency; not an official CEFR classification.
From Middle English crakelen, equivalent to crack + -le (frequentative suffix). The physics sense is part of a facetious sequence "snap, crackle, pop", after the mascots of Rice Krispies cereal.
crackling, crepitation
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Classic usage
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