adjective
- of, relating to, or belonging to the phylum Echinodermata, which includes starfish, sea urchins, sea cucumbers, and brittle stars
Usage: technical; zoological
Examples
- The echinodermatous creatures on the ocean floor display remarkable radial symmetry.
- Sea stars are among the most recognizable echinodermatous animals.
- The museum's collection includes several echinodermatous specimens preserved in resin.
- Echinodermatous larvae often have bilateral symmetry before developing into their adult forms.
- Marine biologists study echinodermatous diversity in deep-sea environments.