abactinal

British

/ æbˈæktɪnəl /

adjective

zoology (of organisms showing radial symmetry) situated away from or opposite to the mouth; aboral

"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

Other Word Forms

abactinally

adverb

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abactinal

These two series also differ from each other in the relations of the abactinal nerve-system.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10 "Echinoderma" to "Edward" by Various

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023