二に次じコイルにじコイルMeanings1nounsecondary coilTechnical term used in electrical engineering, referring to the coil in a transformer or similar device that receives energy from the primary coil.変へん圧あつ器きの二に次じコイルに負ふ荷かを接せつ続ぞくする。Connect the load to the secondary coil of the transformer.