ぐんでんぱんじかん 群伝搬時間 LinksSentence search for 群伝搬時間Sentence search for ぐんでんぱんじかんKanji details for 群, 伝, 搬, 時 and 間Edit in JMdict Noun1. group delay (in fibre optics, fiber optics) Discussions Log in to talk about this word.