Anion

Synonyms of anion

• negatively charged ion
• acid radical
• halide

Antonyms of anion

• cation
• positively charged ion
• anode

Collocations of anion

negatively charged

Frequency: 70 %

An anion is a negatively charged ion.

ionic compound

Frequency: 60 %

Sodium chloride is an ionic compound formed by a cation and an anion.

anion exchange

Frequency: 50 %

The process of anion exchange involves the swapping of anions between compounds.

polyatomic ion

Frequency: 45 %

Sulfate is a polyatomic ion consisting of a sulfur atom and oxygen atoms.

Idiomatic Expressions for anion

• Phrase: an onion a day keeps the doctor away
  Meaning: a humorous play on the saying 'an apple a day keeps the doctor away', implying that eating onions is also beneficial for health
  Usage: My grandmother always says, 'an onion a day keeps the doctor away', as she believes in the health benefits of onions.