Try Our Apps


Gobble up these 8 terms for eating

up quark

noun, Physics.
the quark having electric charge 2/3 times the elementary charge and strangeness and charm equal to 0.
Also called u quark.
Origin of up quark
1975-80 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
up-quark in Science
up quark
A quark with a charge of +2/3. Its mass is approximately 10 times the electron mass and is the least mass of all quarks. See Table at subatomic particle.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Word Value for up

Scrabble Words With Friends

Nearby words for up-quark