2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
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.
From WordNet r 1.6 [wn]:
abactinal
adj : (of radiate animals) located on the surface or end opposite
to that on which the mouth is situated [ant: {actinal}]
more about abactinal
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