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pluteus

[ploo-tee-uh s] /ˈplu ti əs/
noun, plural plutei
[ploo-tee-ahy] /ˈplu tiˌaɪ/ (Show IPA),
pluteuses.
1.
the free-swimming, bilaterally symmetrical larva of an echinoid or ophiuroid.
Origin
1825-1835
1825-35; < Neo-Latin; Latin: breastwork, movable shelter
Related forms
pluteal, plutean, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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