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Definitions from WordNet

Noun positron has 1 sense
  1. positron, antielectron - an elementary particle with positive charge; interaction of a positron and an electron results in annihilation
    --1 is a kind of antilepton

Definitions from the Web

Term: Positron

Noun: A subatomic particle with the same mass as an electron but with a positive charge, found in the nuclei of some radioactive elements.


  • Sense 1: A positron is used in medical imaging techniques such as Positron Emission Tomography (PET) scans.
  • Sense 2: In particle physics, positrons are produced in particle accelerators for various experiments.
  • Sense 3: Positrons create antimatter when they encounter electrons, leading to annihilation of both particles.

Popular Usage:

Noun: "Scientists have discovered an isotope that emits positrons during the process of decay."

Sense 1: "The patient underwent a positron emission tomography (PET) scan to detect any abnormalities in the brain."

Sense 2: "The Large Hadron Collider at CERN can generate positrons for conducting experiments in particle physics."

Sense 3: "The annihilation of positrons and electrons produces energy in the form of gamma rays."

Local Usage:

Noun: "The local hospital recently upgraded their facilities to include a new positron emission tomography (PET) scanner."

Sense 1: "My cousin is studying positron emission tomography (PET) at the local university."

Sense 2: "The local research center is researching ways to manipulate positrons in order to create antimatter."

Sense 3: "During the local science fair, a student demonstrated the annihilation of positrons and electrons."

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