echinoderm

The story

1. Latin · derived fromechinoderma
2. French · derived froméchinoderme
3. English todayechinoderm

From French échinoderme, corresponding to echino- + -derm, after plural of 18th-century Latin echinoderma.

First known use, by meaning

• from 19th c. An animal of the phylum Echinodermata, comprising radially symmetric, spiny-skinned marine animals including seastars, sea urchins, sea cucumbers, crinoids, and sand dollars.