Entry 1 sense Webster, 1913 Bipolar /bīp-ōl'-ẽr/ · Bi·po·lar · IPA /baɪˈpoʊ.lɚ/ 01 a. Doubly polar; having two poles; as, a bipolar cell or corpuscle. 1. Doubly polar; having two poles; as, a bipolar cell or corpuscle.