This Word Of The Day Quiz Is Far From Thersitical
Have you mastered the meaning of phronesis? How about plethoric? Take the quiz on the words from the week of February 17 to 23 to find out.
Question 1 of 7
Origin of D particle
First recorded in 1975–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Scientific definitions for 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.