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Of, relating to, or located on the part of a radially symmetric animal from which the tentacles radiate or the side where the oral area is found.
1. (Zoology) of or denoting the oral part of a radiate animal, such as a jellyfish, sea anemone, or sponge, from which the rays, tentacles, or arms grow
2. (Zoology) possessing rays or tentacles, as a jellyfish
[C19: see actino-, -al1]
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|Adj.||1.||actinal - (of radiate organisms) located on the surface or end on which the mouth is situated|
organism, being - a living thing that has (or can develop) the ability to act or function independently
abactinal - (of radiate animals) located on the surface or end opposite to that on which the mouth is situated