D particle


noun Physics.

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Origin of D particle

First recorded in 1975–80

Words nearby D particle

doze off, dozer, dozy, DP, D.P.A., D particle, DPB, DPC, D.P.H., DPhil, dpi
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Scientific definitions for D particle

D particle

Either of two subatomic particles in the meson family, one neutral and one positively charged, having masses 3,649 and 3,658 times that of the electron and average lifetimes of 4.2 X 10-13 and 1.1 X 10-12 seconds, respectively. See Table at subatomic particle.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.