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.
late 19th century: from Latin, literally 'barrier' (with reference to its shape).
Definition of pluteus in:
- The British & World English dictionary