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<entry eid="2286490" stat="A" corpus="jmdict" type="jmdict"> <ent_corp type="jmdict">jmdict</ent_corp> <ent_seq>1905680</ent_seq> <k_ele> <keb>負極</keb> </k_ele> <r_ele> <reb>ふきょく</reb> </r_ele> <sense> <pos>&n;</pos> <gloss>anode</gloss> <gloss>negative pole</gloss> <gloss>negative electrode</gloss> </sense> <history> <audit time="2023-12-22 00:58:11" stat="A" unap="true"> <upd_name>Hendrik</upd_name> <upd_detl>Correction needed: "cathode" and "anode" reversed with 正極 and 負極</upd_detl> <upd_diff>@@ -13 +13 @@ -&lt;gloss&gt;anode&lt;/gloss&gt; +&lt;gloss&gt;cathode&lt;/gloss&gt;</upd_diff> </audit> <audit time="2023-12-22 00:59:34" stat="A" unap="true"> <upd_name>Hendrik</upd_name> <upd_detl>Added an external reference</upd_detl> <upd_refs>https://ja.wikipedia.org/wiki/%E9%9B%BB%E6%A5%B5</upd_refs> </audit> <audit time="2023-12-22 04:59:07" stat="A"> <upd_uid>jwb</upd_uid> <upd_name>Jim Breen</upd_name> <upd_email>...address hidden...</upd_email> <upd_detl>No, it's the anode. It doesn't seem to be used for magnetic poles.</upd_detl> <upd_refs>GG5: the anode; the negative 「pole [terminal]; a negative electrode. Eijiro: チウム負極 : lithium anode For 正極 we see: GG5: 【電】 a cathode; 【物】 a positive electrode. 中辞典: 〈電池の〉 the cathode.</upd_refs> <upd_diff>@@ -11,0 +12 @@ +&lt;gloss&gt;anode&lt;/gloss&gt; @@ -13,2 +14 @@ -&lt;gloss&gt;cathode&lt;/gloss&gt; -&lt;gloss&gt;south magnetic pole&lt;/gloss&gt; +&lt;gloss&gt;negative electrode&lt;/gloss&gt;</upd_diff> </audit> <audit time="2023-12-25 09:36:48" stat="A" unap="true"> <upd_name>Hendrik</upd_name> <upd_detl>Unfortunately it is not as simple as I had thought: I have a background in electronics, and there the anode (both in a vacuum tube or a semiconductor diode) is positive and the cathode negative (see also https://en.wikipedia.org/wiki/Anode, sections "vacuum tube anode" and "diode anode). So I checked into this matter and found out that in an electrolytic cell (part of a battery), the anode can be either positive or negative depending on whether the cell is charging or discharging. So one could say (as a first approximation) that an anode is the positive terminal in a device to which an external voltage is applied to make same device work, while it is the negative termincal in a device that causes or produces a voltage. Anyway, we always run up against the limitations of a dictionary that cannot be an encyclopedia. :)</upd_detl> </audit> <audit time="2023-12-27 03:17:31" stat="A"> <upd_uid>jwb</upd_uid> <upd_name>Jim Breen</upd_name> <upd_email>...address hidden...</upd_email> <upd_detl>Yes, the English terminology is confusing and indeed we can't get encyclopedic. I think the glosses for 負極 and 正極 are about as good as we can get. People digging more deeply can see Hendrick's useful comments.</upd_detl> </audit> </history> </entry>