antiatom

[ an-tee-at-uhm, an-tahy- ]

/ ˈæn tiˌæt əm, ˈæn taɪ- /

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noun Physics.

an atom of antimatter.

QUIZ

THINGAMABOB OR THINGUMMY: CAN YOU DISTINGUISH BETWEEN THE US AND UK TERMS IN THIS QUIZ?

Do you know the difference between everyday US and UK terminology? Test yourself with this quiz on words that differ across the Atlantic.

Question 1 of 7

In the UK, COTTON CANDY is more commonly known as…

candystring

candyfloss

candypuff

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Origin of antiatom

First recorded in 1965–70; anti- + atom

Words nearby antiatom

anti-apartheid, antiar, antiarrhythmic, antiart, antiarthritic, antiatom, antiauxin, antibacchius, antibacterial, antiballistic, antiballistic missile

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use antiatom in a sentence

In a new experiment, an ultraviolet laser quelled the thermal jitters of antihydrogen atoms, chilling the antiatoms to just above absolute zero.
Newly made laser-cooled antimatter could test foundations of modern physics|Maria Temming|April 5, 2021|Science News
Comparing antiatoms with normal atoms could test some fundamental symmetries of the universe.
Newly made laser-cooled antimatter could test foundations of modern physics|Maria Temming|April 5, 2021|Science News
Taming unruly antimatter with laser light may also allow physicists to measure the properties of antiatoms much more precisely, researchers report in the April 1 Nature.
Newly made laser-cooled antimatter could test foundations of modern physics|Maria Temming|April 5, 2021|Science News

British Dictionary definitions for antiatom

anti-atom

noun

an atom composed of antiparticles, in which the nucleus contains antiprotons with orbiting positrons

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for antiatom

antiatom

[ ăn′tē-ăt′əm, ăn′tī- ]

An atom composed of antiparticles. An antiatom consists of positrons, antiprotons, and antineutrons. It has the same mass and spin as an ordinary atom, and the same amount of charge and magnetic moment, but the charge and magnetic moment are the opposite of those of an ordinary atom.