制せい御ぎょ棒ぼうせいぎょぼうMeanings1nouncontrol rodTechnical term used in nuclear engineering for a rod that absorbs neutrons to control a reactor's fission rate.原げん子し炉ろの出しゅつ力りょくは制せい御ぎょ棒ぼうの挿そう入にゅう量りょうで調ちょう整せいされる。The reactor power is adjusted by the insertion depth of the control rods.