the quark having electric charge −1/3 times the elementary charge and bottom quantum number −1. It is more massive than the up, down, strange, and charmed quarks.
The Letter B Once Had A Much Longer NameThe letter B was part of the Phoenician alphabet more than 3000 years ago in 1000 BCE. At that time, the letter was called beth and looked a little different, but it made the sound of b and was second in the alphabet. The shape of the letter resembled the floor plan of a house, and the word beth meant “house.” This is pictured below. In Hebrew, the letter was called beth, bet, or bayt which also …
Origin of bottom quark
First recorded in 1975–80
Also called beauty quark, b quark, b-quark.
Definition for b quark (2 of 2)
Physics. bottom quark.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Science definitions for b quark
[ bŏt′əm ]
A quark with a charge of -13. Its mass is smaller than that of the top quark, but larger than that of all the other quarks. The bottom quark is sometimes referred to as the beauty quark, though this term is falling out of use. See Table at subatomic particle.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.