1. an aquatic invertebrate animal with a soft body and stinging cells, including jellyfish, corals, and sea anemones
Usage: biology

1. relating to or characteristic of cnidarians
Usage: biology

Examples

• The jellyfish is a common cnidarian found in ocean waters.
• Coral reefs are built by tiny cnidarian animals called polyps.
• Sea anemones are cnidarians that attach themselves to rocks.
• The cnidarian body plan includes a central cavity and tentacles.
• Scientists study cnidarian evolution to understand early animal development.
• The aquarium’s cnidarian exhibit features colorful sea anemones and corals.