意味: そげんn. (Alt=さくげん, Kanji=遡源) tracing back, retroactivity, state of being effective since a past daten. (Alt=さくげん, Kanji=溯源) retracementv. (Alt=さくげんする, Kanji=遡源する) retrace, go back over, trace backwardv. (Alt=さくげんする, Kanji=溯源する) retrace, go back over, trace backward