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.
See bottom quark.
A quark with a charge of – 1/3 . 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.
- Beauty queen
noun an attractive young woman, esp one who has won a beauty contest Contemporary Examples Had Lu Parker, beauty queen reader of news for KTLA, compromised her journalistic objectivity? Mate the Press Joe Mathews June 10, 2009 Then Harris walked onto the postage stamp-sized stage, flashed that beauty queen smile and urged her crowd to […]
- Beauty sleep
sleep before midnight, assumed to be necessary for one’s beauty. any extra sleep. Historical Examples It’s past twelve, I tell you, and you had ought to be in bed gettin’ your beauty sleep. Drusilla with a Million Elizabeth Cooper I hope your sister hasn’t finished her beauty sleep by this time. The World Peril of […]
- Beauty spot
a tiny, molelike patch worn, usually on the face, as to set off the fairness of the skin. a mole or other dark mark on the skin. a place of exceptional scenic or architectural beauty: Montserrat is the beauty spot of the islands. Historical Examples The Gaelic Diarmid had similarly a beauty spot on his […]
- Beauty strip
a narrow forest corridor left uncut alongside a road or body of water.