Found 2 items, similar to abactinal.
English → English (WordNet) Definition: abactinal abactinal adj : (of radiate animals) located on the surface or end opposite to that on which the mouth is situated [ant: actinal]
English → English (gcide) Definition: Abactinal Abactinal \Ab*ac"ti*nal\ ([a^]b*[a^]k"t[i^]*nal), a. [L. ab + E. actinal.] (Zo["o]l.) Pertaining to the surface or end opposite to the mouth in a radiate animal; -- opposed to actinal. “The aboral or abactinal area.” --L. Agassiz. [1913 Webster]