cathode; negative pole; minus terminal
Technical term in electricity and electronics; the electrode where reduction occurs or from which electrons flow into a device.
See also: 陽極
Please connect the battery's cathode and anode correctly.
Cathode rays are a flow of electrons.
陰極 is the formal scientific term for a negative electrode, while ネガティブ is the everyday loanword used for the same concept in casual electrical talk.
From 陰 (yin, negative) + 極 (pole, electrode). A straightforward kanji compound for the negative electrode.