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echinodermatous

[ih-kahy-nuh-dur-muh-tuh s, ek-uh-nuh-]
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adjective
  1. belonging or pertaining to the echinoderms.
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Origin of echinodermatous

First recorded in 1825–35; see origin at echinoderm, -ous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018