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[ploo-tee-uh s]
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noun, plural plu·te·i [ploo-tee-ahy] /ˈplu tiˌaɪ/, plu·te·us·es.
  1. the free-swimming, bilaterally symmetrical larva of an echinoid or ophiuroid.
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Origin of pluteus

1825–35; < New Latin; Latin: breastwork, movable shelter
Related formsplu·te·al, plu·te·an, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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