The abactinal surface of the starfish is covered in small spines.
abactinal plates
Frequency:
60
%
The abactinal plates of the sea urchin provide protection and support.
abactinal spines
Frequency:
50
%
The abactinal spines of the sea star help it move across the ocean floor.
Idiomatic Expressions for abactinal
Phrase: on the abactinal side
Meaning: referring to the opposite side or aspect of something
Usage: The decision was made to focus on the abactinal side of the issue in order to gain a different perspective.