anion

American  

[an-ahy-uhn] / ˈænˌaɪ ən /

noun

Physical Chemistry.

1. a negatively charged ion, as one attracted to the anode in electrolysis.

2. any negatively charged atom or group of atoms (cation ).

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anion British  

/ ˌænaɪˈɒnɪk, ˈænˌaɪən /

noun

1. a negatively charged ion; an ion that is attracted to the anode during electrolysis Compare cation

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anion Scientific  

/ ăn′ī′ən /

1. An ion with net negative charge, having more electrons than protons. In electrolysis, anions migrate to a positively charged anode.

2. Compare cation

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Other Word Forms

• anionic adjective
• anionically adverb

Etymology

Origin of anion

Coined in 1834 by English polymath Willaim Whewell (1794–1866) and popularized by English chemist Michael Faraday (1791–1867) in his collection Experimental Researches in Electricity; from Greek, neuter of aniṓn “going up,” present participle of aniénai “to go up,” from an- an- ³ + iénai “to go”; modeled on anode ( def. )

Example Sentences

This layered structure contains thin metal sheets with water molecules and anions between them.

From Science Daily

Whether chloronitramide anion will be linked to any cancers or has other adverse health risks will be assessed in future work by academics and regulatory agencies, such as the U.S.

From Science Daily

Nickel, cobalt, and manganese enter the solution, where they are bound into stable complexes by the citric acid anions.

From Science Daily

Their analysis revealed the persistence of halogen bonds between the cation and the anion guiding the sequential dynamics.

From Science Daily

"We've demonstrated that the materials design with anions can break the ceiling of energy density for batteries that are more sustainable and cost less," Ji said.

From Science Daily