top quark

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noun Physics.

a heavy quark having electric charge 2/3 times the elementary charge.

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“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.

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Also called t quark, truth quark.

Origin of top quark

First recorded in 1975–80

Words nearby top quark

topper, toppie, topping, topping lift, topple, top quark, toprail, top round, tops, topsail, topsail schooner

How to use top quark in a sentence

There is a particular focus in the magazine on attacking the United States, which al Qaeda calls a top target.
U.S. Spies See Al Qaeda Fingerprints on Paris Massacre|Shane Harris, Nancy A. Youssef|January 8, 2015|DAILY BEAST
In the meantime, Epstein has tried to use his charitable projects to float him back to the top.
Sleazy Billionaire’s Double Life Featured Beach Parties With Stephen Hawking|M.L. Nestel|January 8, 2015|DAILY BEAST
If so, he has his silence -- on top of poor judgment -- to blame.
The Price of Steve Scalise’s Silence|Jason Berry|January 7, 2015|DAILY BEAST
One of its top officials is the current minister of the interior in Baghad.
What an Iranian Funeral Tells Us About the Wars in Iraq|IranWire|January 6, 2015|DAILY BEAST

Pulling oil from the tar sands is costly, even more so when you tack transportation costs on top.
Fact-Checking the Sunday Shows: Jan. 4|PunditFact.com|January 5, 2015|DAILY BEAST
He came to the top of the stairs with a lamp in his hand, and wanted to know what the rumpus was about.
The Bondboy|George W. (George Washington) Ogden
The offspring of the ungodly shall not bring forth many branches, and make a noise as unclean roots upon the top of a rock.
The Bible, Douay-Rheims Version|Various
The jagged top and spurs of San Jacinto Mountain shone like the turrets and posterns of a citadel built of rubies.
Ramona|Helen Hunt Jackson
The way was under a double row of tall trees, which met at the top and formed a green arch over our heads.
Music-Study in Germany|Amy Fay
In fact, his appearance was so formidable that Davy did not pause for a second look, but started off at the top of his speed.
Davy and The Goblin|Charles E. Carryl

Scientific definitions for top quark

top quark

[ tŏp ]

A quark with a charge of +2/3. Its mass is larger than that of all the other quarks and is about 360,000 times that of the electron. See Table at subatomic particle.