Definition of pluteus in English:

pluteus

Syllabification: plu·te·us
Pronunciation: /ˈplo͞otēəs
 
/

noun (plural plutei /-tēˌī/)

Zoology
  • The planktonic larva of some echinoderms, being somewhat triangular with lateral projections.
    More example sentences
    • Brittle stars also have pluteus larvae with skeletal spicules that resemble those of the urchin.
    • Another striking example of metamorphosis is the transformation of the pluteus stage larva of the sea urchin into the adult.

Origin

late 19th century: from Latin, literally 'barrier' (with reference to its shape).

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