noun-modifying (irregular)
bipolar; having two poles
Prenominal adjective used in technical or formal contexts, such as in electronics, physics, or psychology (e.g., 双極性障害).
Bipolar transistors are widely used in electronic circuits.
Bipolar disorder is an illness with severe mood swings.
Compound of 双 (sō, 'pair') and 極 (kyoku, 'pole'). The exact historical derivation is uncertain, but the spelling is conventionally associated with the meaning 'two poles'.