(1):

(a.) Having many poles; in Anat., designating specif. a nerve cell which has several dendrites.

(2):

(a.) Having, or pertaining to, many poles, as a field magnet or armature of a dynamo, or a dynamo having such a field magnet or (sometimes) armature.

(3):

(a.) Having many poles; - applied especially to those ganglionic nerve cells which have several radiating processes.