noun
group delay
Technical term used in fibre optics (fiber optics) to describe the time delay of a signal's envelope.
光ファイバー通信では、群伝搬時間が信号の歪みに影響を与える。
In optical fiber communication, group delay affects signal distortion.
Compound of 群 (group), 伝搬 (propagation), and 時間 (time), directly corresponding to the English technical term 'group delay'.