strange particle

Origin of strange particle

First recorded in 1955–60; originally so called because of the anomalously long decay time of such particles
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

strange particle in Science

strange particle

  1. Any of various unstable elementary particles, having a short half-life and a nonzero strangeness quantum number. Sigma and xi baryons, for example, are strange particles.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.