ロールオフMeanings1nounroll-offelectronics›Technical term in electronics and signal processing for the gradual attenuation of a signal beyond a cutoff frequency.このフィルターのロールオフは急きゅう峻しゅんだ。The roll-off of this filter is steep.ロールオフ特とく性せいをグラフで確かく認にんする。Check the roll-off characteristic on the graph.