Meaning: さくげんn. (Kanji=削減) reduction, curtailment, cutting shortn. (Alt=そげん, Kanji=遡源) tracing back, retroactivity, state of being effective since a past daten. (Alt=そげん, Kanji=溯源) retracementv. (Alt=そげんする, Kanji=遡源する) retrace, go back over, trace backwardv. (Alt=そげんする, Kanji=溯源する) retrace, go back over, trace backwardv. (Kanji=削減する) reduce, lessen, diminish, decrease