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calliopean

[kuh-lahy-uh-pee-uh n]
adjective
  1. resembling a calliope in sound; piercingly loud: a calliopean voice.
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Origin of calliopean

An Americanism dating back to 1855–60; calliope + -an
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018