from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The flavor of quark that has a charge of − 1/3 , has a mass about 8,220 times that of an electron, and belongs to the third generation of elementary fermions.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A quark having a fractional electric charge of -1/3 and a mass about 4,100 to 4,400 MeV. Symbol: b

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a quark with a charge of -1/3 and a mass about 10,000 times that of an electron


Sorry, no etymologies found.


    Sorry, no example sentences found.


Log in or sign up to get involved in the conversation. It's quick and easy.