bottom quark

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noun Physics.

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.

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Also called beauty quark, b quark, b-quark.

Origin of bottom quark

First recorded in 1975–80

Words nearby bottom quark

bottommost, bottom of the barrel, bottom of the ladder, bottom-of-the-line, bottom out, bottom quark, bottom round, bottomry, bottomset bed, bottoms up, bottom surgery

How to use bottom quark in a sentence

For instance, along with the up and down quark, there’s the charm and strange quark and, heavier still, the top and bottom quark.
A New Map of All the Particles and Forces|Natalie Wolchover, Samuel Velasco and Lucy Reading-Ikkanda|October 22, 2020|Quanta Magazine
He hits bottom at Rocamadour, a sanctuary in the Dordogne known as a citadel of faith devoted to Mary.
Houellebecq’s Incendiary Novel Imagines France With a Muslim President|Pierre Assouline|January 9, 2015|DAILY BEAST
Despite its ranking at the bottom of most international development indexes, the conflict is shrouded by confusion.
The Year’s Most Forgotten Humanitarian Crisis|Nina Strochlic|January 1, 2015|DAILY BEAST
Mary Elizabeth Williams of Salon labels the show a “crass stunt” on a “bottom-feeding vortex of sadness network.”
Your Husband Is Definitely Gay: TLC’s Painful Portrait of Mormonism|Samantha Allen|January 1, 2015|DAILY BEAST

Bottom line is that it will only be a BVR [beyond visual range] airplane.
New U.S. Stealth Jet Can’t Fire Its Gun Until 2019|Dave Majumdar|December 31, 2014|DAILY BEAST
On Monday, Soelistyo had jolted relatives as well as searchers by suggesting that the plane could be “at the bottom of the sea.”
Wreckage, Bodies of AirAsia Crash Found|Lennox Samuels|December 30, 2014|DAILY BEAST
But, as the keel of the boats touched bottom, each boat-load dashed into the water and then into the enemy's fire.
Gallipoli Diary, Volume I|Ian Hamilton
In these archipelagos the waters being shallow, the frost was quite intense enough to cool them to the bottom.
The Giant of the North|R.M. Ballantyne
"I have a letter somewhere," looking in the machine drawer and finding the letter in the bottom of the workbasket.
The Awakening and Selected Short Stories|Kate Chopin
In the presence of bromin the chloroform, which settles to the bottom, assumes a yellow color.
A Manual of Clinical Diagnosis|James Campbell Todd
The signatures at the bottom of this memorandum, were hidden from Wharton's view, when he was allowed to read it.
The Pastor's Fire-side Vol. 3 of 4|Jane Porter

Scientific definitions for bottom quark

bottom 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.