top quark

  1. a heavy quark having electric charge 2/3 times the elementary charge.

Origin of top quark

First recorded in 1975–80
  • Also called t quark, truth quark.

Words Nearby top quark Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Scientific definitions for top quark

top quark

[ tŏp ]

  1. A quark with a charge of +2/3. Its mass is larger than that of all the other quarks and is about 360,000 times that of the electron. See Table at subatomic particle.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.