proton
/ˈprəʊtɒn
/noun Physics
A stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron.Overall, atoms are neutral and the number of protons in their nuclei equals the number of electrons....
- The matter was composed primarily of an ionized gas of electrons, protons, and helium nuclei.
- An alpha particle consists of two protons and two neutrons; it is the nucleus of a helium atom.
The mass of the proton is 1,836 times greater than that of the electron. The atoms of each chemical element have a characteristic number of protons in the nucleus; this is known as the atomic number. The common isotope of hydrogen has a nucleus consisting of a single proton.
Derivatives
protonic
- The organic purity of the organoarsenic species was determined by protonic nuclear magnetic resonance.
- The rate of the former, productive reaction is determined by the protonic conductance of the consumer.
- It consists of an interdependence between the electronic and protonic captures, which results from electrostatic interactions between redox and protonatable groups.
Origin
1920s: from Greek, neuter of prōtos 'first'.
Rhymes
- weightlessly
- weightlessness
- weightlifter
- weightlifting
- weight loss
- weight train
- weight-trained
- weight training
- weight-watch
- weight-watcher
- weight-watching
- weighty
- Weihsien
- Weill, Kurt
- Weil's disease
- Weil, Simone
- Weimar
- Weimaraner
- Weimar Republic
- Weinberg, Steven
- Weinstube
- weir
- weird
- weirded out
- weirdie