1) Having no axes 2) Having no axis 3) Having no axis extremities 4) Like hydra neurons 5) Like some nerve cells 
• (a.) Having no radiating processes; -- applied particularly to certain nerve cells.
(a-po´lәr) having neither poles nor processes; without polarity.
A·po'lar adjective [ Prefix a- + polar .] (Biol.) Having no radiating processes; -- applied particularly to certain nerve cells. 
Type: Term Pronunciation: ā-pō′lăr Definitions: 1. Without poles; specifically denoting embryonic nerve cells (neuroblasts) that have not yet begun to sprout processes. Synonyms: hydrophobic2