Actinal Definition
ăktĭ-nəl, ăk-tī-
adjective
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.
American Heritage
Of the oral region of a radiate animal, from which the rays or tentacles grow.
Webster's New World
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.
American Heritage Medicine
(zoology) Pertaining to the side or surface around the mouth in an animal that has radial symmetry such as a starfish.
Wiktionary
(zoology) Pertaining to the axis of rotational symmetry in radiate animals.
Wiktionary
Antonyms:
Origin of Actinal
From Ancient Greek ἀκτίς, ἀκτῖν- (actis, actin-, “ray”) + -al. The usage was coined by Louis Agassiz (See quotations below.).
From Wiktionary
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