(definition) by Webster 1913 Tue Dec 21 1999 at 21:34:37

Ab*ac"ti*nal (#), a. [L. ab + E. actinal.] Zool.

Pertaining to the surface or end opposite to the mouth in a radiate animal; -- opposed to actinal.

"The aboral or abactinal area."

L. Agassiz.

 

© Webster 1913.

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