English Dictionary

actinal

形容詞

(zoology) Pertaining to the side or surface around the mouth in an animal that has radial symmetry such as a starfish. / (zoology) Pertaining to the axis of rotational symmetry in radiate animals.

日本語の意味

放射相称動物（例：ヒトデなど）の口の周囲や側面、表面に関する / 放射動物の回転対称軸に関する

The biologist examined the actinal surface of the starfish under a microscope.

生物学者は顕微鏡でヒトデの口側の表面を調べた。

意味（1）

(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 ...

意味（2）

(zoology) Pertaining to the axis of rotational symmetry in radiate animals.

[Professor Agassiz] gives the names of two axes of the animals; that around which the motion of the animal occurs is the actinal axis ...