actinal
The English word “actinal” has 2 meanings listed here.
adjective
- Pertaining to the side or surface around the mouth in an animal that has radial symmetry such as a starfish.
- Pertaining to the axis of rotational symmetry in radiate animals.
Etymology
From Ancient Greek ἀκτίς, ἀκτῖν- (aktís, aktîn-, “ray”) + -al. The usage was coined by Louis Agassiz (See quotations below.).
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