an·​ode | \ ˈa-ˌnōd \

Definition of anode

1 : the electrode of an electrochemical cell at which oxidation occurs: such as
a : the positive terminal of an electrolytic cell
b : the negative terminal of a galvanic cell
2 : the electron-collecting electrode of an electron tube broadly : the positive electrode of a diode — compare cathode

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Other Words from anode

anodic \ a-​ˈnä-​dik \ or less commonly anodal \ -​ˈnō-​dᵊl \ adjective
anodically \ -​di-​k(ə-​)lē \ or less commonly anodally \ -​dᵊl-​ē \ adverb

Examples of anode in a Sentence

Recent Examples on the Web

Next year, a company called Sila Nanotechnologies is rolling out its new silicon anode batteries, which replace the graphite in today’s batteries with precisely engineered (and tiny) silicon particles. Ezra Dyer, Popular Mechanics, "Your Gadgets' Battery Life Could Be About to Get Much Better," 19 Oct. 2018 Essentially, a violent enough jolt can break the non-conductive wall that separates a battery's anode and cathode, which causes a big, nasty short inside the system. Eric Limer, Popular Mechanics, "This Flaming Robot Shows Just How Dangerous a Busted Battery Can Be," 7 July 2016 Typically, graphite anode materials are used in lithium ion batteries. Lauren Goode, WIRED, "Batteries Still Suck, But Researchers Are Working on It," 22 May 2018 The battery essentially swaps out a common battery anode material, graphite, for very thin, high-energy lithium-metal foil, which can hold more ions — and, therefore, provide more energy capacity. Eric Limer, Popular Mechanics, "Why Smartphone Batteries Might Be About to Get Way Better," 19 Aug. 2016 The anode, covered with a catalyst, splits water molecules into O2, hydrogen ions, and electrons. Robert F. Service, Science | AAAS, "Ammonia—a renewable fuel made from sun, air, and water—could power the globe without carbon," 12 July 2018 The company had been working on a breakthrough aluminum production technology called inert anode smelting since 2009. Elizabeth Weise, USA TODAY, "Apple tries to reduce emissions from making iPhones with green aluminum venture," 10 May 2018 The oxygen gets released in molecular form (O2) at the anode thanks to an aluminum oxide catalyst. John Timmer, Ars Technica, "Process takes CO₂ from the air, converts it to carbon nanotubes," 30 May 2018 Prototype batteries built at Sila with the startup's silicon-dominant anode technology. Christopher Mims, WSJ, "The Battery Boost We’ve Been Waiting for Is Only a Few Years Out," 18 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'anode.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of anode

1834, in the meaning defined at sense 1

History and Etymology for anode

Greek anodos way up, from ana- + hodos way

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Statistics for anode

Last Updated

1 Jan 2019

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Time Traveler for anode

The first known use of anode was in 1834

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English Language Learners Definition of anode

technical : the part of an electrical device (such as a battery) from which electrons leave


an·​ode | \ ˈa-ˌnōd \

Kids Definition of anode

1 : the positive electrode of an electrolytic cell
2 : the negative end of a battery that is delivering electric current
3 : the electron-collecting electrode of an electron tube


an·​ode | \ ˈan-ˌōd \

Medical Definition of anode

1 : the electrode of an electrochemical cell at which oxidation occurs: as
a : the positive terminal of an electrolytic cell
b : the negative terminal of a storage battery that is delivering current
2 : the electron-collecting electrode of an electron tube — compare cathode

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More from Merriam-Webster on anode

Rhyming Dictionary: Words that rhyme with anode

Spanish Central: Translation of anode

Nglish: Translation of anode for Spanish Speakers Encyclopedia article about anode

Comments on anode

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to deny responsibility for

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