Meaning of proton
Pronunciation: (prō'ton), [key]
— n. Physics, Chem.
- a positively charged elementary particle that is a fundamental constituent of all atomic nuclei. It is the lightest and most stable baryon, having a charge equal in magnitude to that of the electron, a spin of , and a mass of 1.673 × 10− kg. Symbol: P
- proton (Thesaurus)