actinian
nounUK /ækˈtɪniən/
US /ækˈtɪniən/
A sea anemone is a soft sea animal that looks like a flower and has little tentacles.
The actinian waved its colorful tentacles in the tide pool.
SYNONYMS
OTHER MEANINGS
2. A member of the order Actiniaria, which includes sea anemones.
Scientists classified the creature as an actinian after studying its tentacles.
3. Relating to or resembling a sea anemone.
The actinian shape of the coral made it easy to identify.
4. Any of various flower-like marine polyps that attach to rocks or shells.
An actinian clung to the rock at the bottom of the aquarium.