- a sea anemone, especially of the genus Actinia.
Origin of actinia
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for actinia
The locomotive power of the anemone, or actinia, is very sluggish.
Actinia Mesembryanthemum, partially expanded; (a) Ditto, closed.Glaucus
The first twelve mesenteries are disposed in couples, and do not differ from those of Actinia except in size.
Each several coral-individual is equivalent to a single living polyp (actinia).The Wonders of Life
The Actinia crassicornis, Asterias glacialis and oculata, are common.An Account of the Bell Rock Light-House
- any sea anemone of the genus Actinia, which are common in rock pools
C18: New Latin, literally: things having a radial structure. See actino-, -ia
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