Element
proton Audio
pro·ton [ proh-ton ]
Subclass of:
Nucleons; Hydrogen
Definitions related to protons:
  • A fundamental particle with a positive charge.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • A small, positively charged particle of matter found in the atoms of all elements. Streams of protons generated by special equipment can be used for radiation treatment.
    NCI Dictionary of Cancer Terms
    U.S. National Cancer Institute, 2021
  • Stable elementary particles having the smallest known positive charge, found in the nuclei of all elements. The proton mass is less than that of a neutron. A proton is the nucleus of the light hydrogen atom, i.e., the hydrogen ion.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
  • (hydrogen ion) The nucleus of the light hydrogen atom; stable elementary particles having the smallest known positive charge, found in the nuclei of all elements.
    CRISP Thesaurus
    National Institutes of Health, 2006
Try this search on: Farlex, Merriam-Webster, Oxford Dictionary, or Wordnik

This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.