proton
Proton (noun) means a positively charged particle found in the nucleus of every atom. Example: “The number of protons in an atom determines which element it is.”
How to use proton
Learner’s notesIn plain EnglishA tiny positively-charged particle inside an atom's nucleus, alongside neutrons.
Word forms
protons plural
Fill the gap
Can you complete this real example?
The number of _____ in an atom determines which element it is.
Etymology
Coined in 1920 by physicist Ernest Rutherford from Greek prôton, "first thing," echoing the earlier-named electron.
Synonyms
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Rhymes for proton
See all rhymes for proton →Frequently asked questions
What does “proton” mean?
The word “proton” means a positively charged particle found in the nucleus of every atom. In plain terms, a tiny positively-charged particle inside an atom's nucleus, alongside neutrons.
How do you pronounce “proton”?
“Proton” is pronounced PROH-ton (/ˈpɹoʊ.tɑn/ in IPA).
How do you use “proton” in a sentence?
Here is “proton” used in a sentence: “The number of protons in an atom determines which element it is.”
What is another word for “proton”?
Words with a similar meaning to “proton” include p.
What part of speech is “proton”?
“Proton” is a noun.
Where does the word “proton” come from?
The word “proton” dates back to around 1920 and comes from Greek. Coined in 1920 by physicist Ernest Rutherford from Greek prôton, "first thing," echoing the earlier-named electron.
Is “proton” a common word?
“Proton” is an uncommon word in modern English.