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strange D meson

American  

noun

  1. Physics. a meson with positive charge, a mass of 3,852 times that of the electron, and an approximate mean lifetime of 4.7 × 10-13 seconds.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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