さいさうんどう 歳差運動 LinksSentence search for 歳差運動Sentence search for さいさうんどうKanji details for 歳, 差, 運 and 動Edit in JMdict Noun1. (motion of) precession of the equinoxesAstronomy, See also 歳差 さいさNoun2. precessionPhysics Discussions Log in to talk about this word.