cation: meaning, definition, pronunciation and examples
C2Technical / Scientific
Quick answer
What does “cation” mean?
A positively charged ion, attracted to the cathode (negative electrode) during electrolysis.
Audio
Pronunciation
Definition
Meaning and Definition
A positively charged ion, attracted to the cathode (negative electrode) during electrolysis.
In chemistry, an atom or molecule that has lost one or more electrons, resulting in a net positive charge. The term is also used metaphorically in some scientific contexts to describe a central, attracting entity.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Pronunciation may vary slightly (see IPA).
Connotations
Identical technical connotations in both varieties.
Frequency
Used with identical frequency in relevant scientific contexts in both the UK and US.
Grammar
How to Use “cation” in a Sentence
The [metal] cation is [property/action].[Cation] and [anion] form a salt.A [cation] moves toward the cathode.Vocabulary
Collocations
Examples
Examples of “cation” in a Sentence
adjective
British English
- cation-exchange properties
- cation-binding site
American English
- cation exchange resin
- cation binding site
Usage
Meaning in Context
Business
Virtually never used.
Academic
Core term in chemistry, physics, and materials science textbooks and research.
Everyday
Extremely rare outside of educational or scientific discussion.
Technical
Fundamental and frequent term in electrochemistry, battery technology, soil science, and water treatment.
Watch out
Common Mistakes When Using “cation”
- Mispronouncing it as /ˈkeɪ.ʃən/ (like 'cation' in 'vacation').
- Confusing it with 'anion'.
- Using it in non-scientific contexts.
FAQ
Frequently Asked Questions
A cation is a positively charged ion, while an anion is a negatively charged ion. They are attracted to opposite electrodes.
It is pronounced /ˈkæt.aɪ.ən/ (KAT-eye-uhn), with the stress on the first syllable. It does not rhyme with 'nation'.
Almost never. It is a highly specialised scientific term. Any non-chemical use would be a very deliberate and rare metaphor.
The sodium ion (Na+) is a very common cation, found in table salt (sodium chloride) and essential for biological functions.
A positively charged ion, attracted to the cathode (negative electrode) during electrolysis.
Cation is usually technical / scientific in register.
Learning
Memory Aids
Mnemonic
Remember: A CATion is PAWSitive. (Cat -> paws -> positive charge).
Conceptual Metaphor
Often conceptualized as a traveler moving toward a destination (the cathode).
Practice
Quiz
What is the defining characteristic of a cation?