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Pronunciation varies by accent · adjective
(zoology) Pertaining to the side or surface around the mouth in an animal that has radial symmetry such as a starfish..
The so-called mouth is always placed at one of these poles, and from it radiate the most prominent organs, in consequence of which I have called this side of the body the oral or actinal area ...
[Professor Agassiz] gives the names of two axes of the animals; that around which the motion of the animal occurs is the actinal axis ...
Use actinal when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Actinal means (zoology) Pertaining to the side or surface around the mouth in an animal that has radial symmetry such as a starfish..
The closest synonym depends on the sentence and intended sense.
Possible antonyms include abactinal.
The so-called mouth is always placed at one of these poles, and from it radiate the most prominent organs, in consequence of which I have called this side of the body the oral or actinal area ...
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