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cryptovolcanic

[krip-toh-vol-kan-ik]
adjective Geology.
  1. of or relating to a rock structure providing indirect or incomplete evidence of volcanism.
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Origin of cryptovolcanic

First recorded in 1920–25; crypto- + volcanic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018