|physics the antiparticle of the electron, having the same mass but an equal and opposite charge. It is produced in certain decay processes and in pair production, annihilation occurring when it collides with an electron|
|[C20: from posi(tive + elec)tron]|
|a stew of meat, vegetables, potatoes, etc.|
|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
positron pos·i·tron (pŏz'ĭ-trŏn')
A positively charged particle of the same mass and magnititude of charge as an electron. Also called antielectron, positive electron.
|positron (pŏz'ĭ-trŏn') Pronunciation Key
The antiparticle that corresponds to an electron. Also called antielectron.