proton: meaning, definition, pronunciation and examples
B2Academic, Scientific, Technical
Quick answer
What does “proton” mean?
A stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
Audio
Pronunciation
Definition
Meaning and Definition
A stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
In chemistry and physics, a fundamental component of matter; in broader contexts, can metaphorically refer to a fundamental, positive, or initiating element.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Usage is identical in scientific contexts.
Connotations
Purely technical/scientific; no cultural or colloquial connotations.
Frequency
Equally frequent in UK and US academic/science writing.
Grammar
How to Use “proton” in a Sentence
The nucleus contains [number] protons.A proton is composed of...[Element] has an atomic number of [number], meaning it has [number] protons.Vocabulary
Collocations
Examples
Examples of “proton” in a Sentence
adjective
British English
- protonic conductivity
- protonic membrane
American English
- protonic charge
- protonic decay
Usage
Meaning in Context
Business
Virtually never used.
Academic
Core term in physics, chemistry, and related engineering fields.
Everyday
Rare, only in simplified explanations of science (e.g., 'An atom has protons and neutrons in the centre').
Technical
Precise term in particle physics, nuclear medicine, quantum chemistry.
Vocabulary
Synonyms of “proton”
Neutral
Weak
Vocabulary
Antonyms of “proton”
Watch out
Common Mistakes When Using “proton”
- Confusing 'proton' with 'photon' (a particle of light).
- Mispronouncing as /ˈprɒt.ən/.
- Using 'proton' to refer to any subatomic particle.
FAQ
Frequently Asked Questions
A proton has a positive electric charge of +1 elementary charge.
Protons are found in the nucleus (centre) of an atom.
A proton has a positive charge, while a neutron is electrically neutral. Both are nucleons.
In ordinary chemical reactions, no. Changing the number of protons transforms the atom into a different element, which occurs in nuclear reactions.
A stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
Proton is usually academic, scientific, technical in register.
Proton: in British English it is pronounced /ˈprəʊ.tɒn/, and in American English it is pronounced /ˈproʊ.tɑːn/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “As fundamental as a proton (rare, metaphorical)”
Learning
Memory Aids
Mnemonic
PROton = PROfessional Positive particle. Or, PROtons are PROs at being positive.
Conceptual Metaphor
A proton can be a metaphor for a foundational, stable, positive force or component.
Practice
Quiz
Which phrase most accurately describes a proton's role?