zoology (of organisms showing radial symmetry) situated away from or opposite to the mouth; aboral
- abactinally, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
How to use abactinal in a sentence
The plane of the actinal surface at first meets that of the abactinal at an acute or nearly right angle.The Works of Francis Maitland Balfour, Volume II (of 4) | Francis Maitland Balfour
The abactinal disc now also grows out into five short processes, separated by five shallow notches.The Works of Francis Maitland Balfour, Volume II (of 4) | Francis Maitland Balfour
These two series also differ from each other in the relations of the abactinal nerve-system.