Meaning

adjective of or relating to manic depressive illness

adjective of, pertaining to, or occurring in both polar regions

adjective having two poles

originEtymology tree Proto-Indo-European *dwóh₁ Proto-Indo-European *dwi- Proto-Italic *dwi- Latin bi-bor. English bi- Proto-Indo-European *kʷel-der. Proto-Indo-European *kʷól-os Proto-Hellenic *pólos Ancient Greek πόλος (pólos)der. Latin polus Proto-Indo-European *h₂el-der.? Proto-Italic *-ālis Latin -ālis Latin -āris Late Latin polārislbor. English polar English bipolar From bi- + polar.

Etymology from Wiktionary, CC BY-SA 3.0