Babylon 10
The world's best online dictionary

Download it's free

Definition of Abactinal

Abactinal Definition from Language, Idioms & Slang Dictionaries & Glossaries
Webster's Revised Unabridged Dictionary (1913)
(a.)
Pertaining to the surface or end opposite to the mouth in a radiate animal; -- opposed to actinal.
  
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
hEnglish - advanced version

abactinal
\ab*ac"ti*nal\ (ăb*ăk"t&ibreve;*nal), a. [l. ab + e. actinal.] (zo?l.) pertaining to the surface or end opposite to the mouth in a radiate animal; -- opposed to actinal. "the aboral or abactinal area." agassiz.

WordNet 2.0

Adjective
1. (of radiate animals) located on the surface or end opposite to that on which the mouth is situated
(antonym) actinal