actinal[ak′ti nəl, ak tī′nəl]
actinal definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
of the oral region of a radiate animal, from which the rays or tentacles grow
Origin: actin(o)- plush -al
actinal definition by American Heritage Dictionary
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.
- acˈti·nal·ly adverb