anode

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noun an·ode \ˈa-ˌnōd\

Definition of anode

1 : the electrode of an electrochemical cell at which oxidation occurs: such asa : the positive terminal of an electrolytic cellb : 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

anodic

play \a-ˈnä-dik\ or less commonly

anodal

play \-ˈnō-d^əl\ adjective

anodically

play \-di-k(ə-)lē\ or less commonly

anodally

play \-d^əl-ē\ adverb

See anode defined for English-language learners

See anode defined for kids

Recent Examples of anode from the Web

The Prieto battery still relies on the main concept of a battery — the negative (anode) and positive (cathode) sides of the battery swap electrons to produce energy.

— tamara chuang, The Denver Post, "Your smartphone battery is going to get way better if Prieto can turn its 3-D battery into a commercial reality", 18 June 2017
Sheets with the cathodes and anodes are rolled with seperaters into canisters that resemble metal hair spray bottles.

— meredith cohn, baltimoresun.com, "Little known Cockeysville plant produces powerful batteries for satellites, military and race cars", 15 June 2017
By doing so, the silicon anodes in lithium-ion batteries can continuously form new bonds and repair themselves when needed.

— robert holly, chicagotribune.com, "These U. of I. professors say they can make phone batteries last longer (and explode less)", 9 June 2017
Electricity is generated by the exchange of ions between the cathode and anode.

— ken wells, WSJ, "The Race to Build a Better Battery for Storing Power", 21 May 2017
Its Mentor factory will make anodes and cathodes for the electrochemical industry.

— grant segall, cleveland.com, "Heilind and De Nora plan big adjacent facilities in Mentor (photos)", 15 May 2017
An anode rod will corrode before the steel does, and in effect serves as a sacrificial rust attractant.

— timothy dahl, Popular Mechanics, "How to Easily Maintain a Water Heater", 17 Feb. 2017
To use, simply spit into the reservoir and fold it into the center of the cathode and anode.

— nathan hurst, Smithsonian, "This Spit-Powered Biobattery Is Made From a Single Sheet of Paper", 30 Jan. 2017
Lithium iron phosphate Particles organize themselves into an anode, which allows batteries to charge and deliver power extremely quickly.

— aaron rowe, WIRED, "Nanoparticles and Their Nifty Uses", 26 Apr. 2011

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.

Origin and Etymology of anode

Greek anodos way up, from ana- + hodos way

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First Known Use: 1834

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ANODE Defined for English Language Learners

anode

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noun

Definition of anode for English Language Learners

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

ANODE Defined for Kids

anode

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noun an·ode \ˈa-ˌnōd\

Definition of anode for Students

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

Medical Dictionary

anode

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noun an·ode \ˈan-ˌōd\

Medical Definition of anode

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