伝搬でんぱん Noun Irregular Intransitive English jmdict 1 noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru intransitive verb transmission;propagation;spread
往復伝搬時間おうふくでんぱんじかん Noun English jmdict 1 noun (common) (futsuumeishi) computing round-trip propagation time