Definition of pluteus in English:

pluteus

Line breaks: plu|teus
Pronunciation: /ˈpluːtɪəs
 
/

noun (plural plutei /ˈpluːtɪʌɪ/)

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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