ゼーマン効こう果かMeanings1nounZeeman effectphysicsPhysics term for the splitting of spectral lines in a magnetic field. Named after Pieter Zeeman.ゼーマン効こう果かは磁じ場ば中ちゅうのスペクトル線せんの分ぶん裂れつを説せつ明めいする。The Zeeman effect explains the splitting of spectral lines in a magnetic field.