an·​ode | \ ˈa-ˌnōd How to pronounce anode (audio) \

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 How to pronounce anodic (audio) \ or less commonly anodal \ a-​ˈnō-​dᵊl How to pronounce anodal (audio) \ adjective
anodically \ a-​ˈnō-​di-​k(ə-​)lē How to pronounce anodically (audio) \ or less commonly anodally \ a-​ˈnō-​dᵊl-​ē How to pronounce anodally (audio) \ adverb

Examples of anode in a Sentence

Recent Examples on the Web

But the robot’s speed will only improve, since Shepherd and his team can increase the surface area of the anodes and cathodes to improve power density. Matt Simon, WIRED, "This Robot Fish Powers Itself With Fake Blood," 19 June 2019 If the anode was coated with negative charges, the scientists realized, those layers repel chloride and temper the rate of decay in the underlying metal. David Grossman, Popular Mechanics, "Scientists Are Now Transforming Saltwater Into Hydrogen Fuel," 20 Mar. 2019 The hulking lithium-ion battery in the belly of a Tesla Model S stores electrical energy as a voltage across an anode and cathode. Avery Thompson, Popular Mechanics, "Where Are All the Hydrogen Cars?," 10 Aug. 2018 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

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

17 Sep 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 How to pronounce anode (audio) \

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 How to pronounce anode (audio) \

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

What made you want to look up anode? Please tell us where you read or heard it (including the quote, if possible).


authorized for issue (as a bond)

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