View source for cathode

==English==

===Alternative forms===
* {{l|en|kathode}}

===Etymology===
{{root|en|ine-pro|*sed-}}
From {{uder|en|grc|κατα-||down}} and {{m|grc|ὁδός||journey, way}}, equivalent to Ancient Greek {{m|grc|κάθοδος||way down, descent}}. {{coin|en|William Whewell|nat=English|occ=polymath|in=1834}} for {{w|Michael Faraday}}, who introduced it later that year. {{surf|en|cata-|alt1=cath-|pos1=alternative form of ''cata-''|-ode}}.

===Pronunciation===
* {{IPA|en|/ˈkæθ.oʊd/}}
* {{audio|en|LL-Q1860 (eng)-Vealhurl-cathode.wav|a=Southern England}}

===Noun===
{{wikipedia}}
{{en-noun}}

# {{lb|en|electricity}} An [[electrode]], of a [[cell]] or other [[electrically]] [[polarized]] device, through which a positive [[current]] of [[electricity]] flows [[outwards]] (and thus, [[electrons]] flow inwards). It can have either a negative or a positive [[voltage]] with respect to [[anode]] of the same polarized device (depending on whether the device is a load or a source, respectively).
# {{lb|en|by extension}} The electrode at which chemical [[reduction]] of [[cations]] takes place, usually resulting in the [[deposition]] of [[metal]] onto the electrode.
# {{lb|en|electronics}} The electrode from which electrons are emitted into a {{w|vacuum tube}} or {{w|gas-filled tube}}.
# {{lb|en|electronics}} That electrode of a [[semiconductor]] device which is connected to the [[n-type]] material of a [[p-n junction]].

====Antonyms====
* {{l|en|anode}}

====Derived terms====
{{col-auto|en|cascode|cathodal|cathodograph|cathodoluminescence|cathodoluminescent|microcathode
|anticathode
|biocathode
|cathode dark space
|cathode ray
|cathode-ray tube
|cathodic
|catholyte
|cold cathode
|hot cathode
|multicathode
|photocathode
}}

====Related terms====
* {{l|en|cation}}

====Translations====
{{trans-top|electrode through which current flows outward}}
* Arabic: {{t-needed|ar}}
* Armenian: {{t+|hy|կաթոդ}}
* Basque: {{t|eu|katodo}}
* Belarusian: {{t|be|като́д|m|sc=Cyrl}}
* Bulgarian: {{t|bg|като́д|m|sc=Cyrl}}
* Catalan: {{t+|ca|càtode|m}}
* Chinese:
*: Mandarin: {{t+|cmn|陰極|tr=yīnjí}}, {{t+|cmn|正極|tr=zhèngjí}}
* Czech: {{t+|cs|katoda|f}}
* Dutch: {{t+|nl|kathode|f}}
* Esperanto: {{t|eo|katodo}}
* Estonian: {{t|et|katood}}
* Finnish: {{t+|fi|katodi}}
* French: {{t+|fr|cathode|f}}
* Galician: {{t+|gl|cátodo|m}}
* Georgian: {{t-needed|ka}}
* German: {{t+|de|Kathode|f}}, {{t|de|Minuspol}}
* Gujarati: {{t|gu|ઋણાગ્ર|sc=Gujr}}
* Hawaiian: {{t|haw|ʻūholo uila ʻine}}
* Hindi: {{t|hi|ऋणाग्र|sc=Deva}}, {{t|hi|कैथोड|sc=Deva}}
* Hungarian: {{t+|hu|katód}}
* Icelandic: {{t|is|bakskaut|n}}, {{t|is|mínusskaut|n}}, {{t|is|neiskaut|n}}, {{t|is|neikvætt rafskaut|n}}, {{t|is|katóða|f}}
* Indonesian: {{t+|id|katode}}
* Italian: {{t+|it|catodo|m}}
* Japanese: {{t+|ja|陰極|tr=いんきょく, inkyoku|sc=Jpan}}, {{t+|ja|カソード|tr=kasōdo|sc=Jpan}}
* Khmer: {{t|km|កាតូដ}}, {{t+|km|កាតូត}}
* Korean: {{t+|ko|음극}}, {{t|ko|캐소드}}
* Latvian: {{t|lv|katods|m}}
* Lithuanian: {{t+|lt|katodas|m}}
* Macedonian: {{t|mk|като́да|f}}
* Malay: {{t|ms|katod}}
* Maori: {{t|mi|pitoiho}}, {{t|mi|pito hopuirahiko}}
* Marathi: {{t|mr|ऋणाग्र|sc=Deva}}
* Mongolian: {{t-needed|mn}}
* Polish: {{t+|pl|katoda|f}}
* Portuguese: {{t+|pt|cátodo|m}}, {{t|pt|catodo|m}} {{qualifier|Brazil}}, {{t|pt|catódio|m}}
* Russian: {{t+|ru|като́д|m}}
* Spanish: {{t+|es|cátodo|m}}
* Swahili: {{t|sw|kathodi}}
* Swedish: {{t+|sv|katod|c}}
* Tagalog: {{t|tl|balindas}}
* Thai: {{t-needed|th}}
* Turkish: {{t-needed|tr}}
* Ukrainian: {{t|uk|като́д|m|sc=Cyrl}}
* Vietnamese: {{t+|vi|âm cực}}
{{trans-bottom}}

{{checktrans-top}}
* Afrikaans: {{t+check|af|katode}}
* Aragonese: {{t-check|an|catodo|m}}
* Esperanto: {{t-check|eo|katodo}}
* Kabuverdianu:
*: ALUPEC: {{t-check|kea|katiod'|m}}
*: Badiu: {{t-check|kea|katiodu|m}}
*: Fogo: {{t-check|kea|katiodu|m}}
*: São Vicente: {{t-check|kea|katiod'|m}}
* Serbo-Croatian: {{t+check|sh|katoda|f}}
{{trans-bottom}}

{{C|en|Electrochemistry}}

==French==

===Pronunciation===
* {{audio|fr|LL-Q150 (fra)-LoquaxFR-cathode.wav}}

===Noun===
{{fr-noun|f}}

# {{l|en|cathode}}

====Derived terms====
{{col-auto|fr|cathodique}}

====Descendants====
* {{desc|ro|catod|bor=1}}

===Further reading===
* {{R:fr:TLFi}}