noun
negative electrode; negative pole; anode
Technical term used in electronics and electrochemistry. In a galvanic cell, the anode is the negative electrode, but in electrolysis the anode is positive; 負極 always refers to the negative terminal.
電池の負極を外してください。
Please disconnect the negative terminal of the battery.
負極から電子が流れ出る。
Electrons flow out from the negative electrode.
陽極 (anode) can be positive or negative depending on the device; 負極 is unambiguously the negative terminal.
Compound of 負 (negative) and 極 (pole, electrode).