Abactinal
Pronunciation : Ab*ac"ti*nal
Part of Speech : a.
Etymology : [L. ab + E. actinal.] (Zo?l.)
Definition : Defn: Pertaining to the surface or end opposite to the mouth in a radiate animal; -- opposed to actinal. "The aboral or abactinal area." L. Agassiz.
Source : Webster's Unabridged Dictionary, 1913