atom

noun

at·om ˈa-təm How to pronounce atom (audio)

: the smallest particle of an element that can exist either alone or in combination

an atom of hydrogen

: the atom considered as a source of vast potential constructive or destructive energy

… a largely forgotten legacy of this country's conquest of the atom.

William J. Broad

… when Congress passed the Atomic Energy Act in 1954 and allowed private utilities to "harness the atom."

Barry Werth

: a tiny particle : bit

There's not an atom of truth in what he said.

: one of the minute indivisible particles of which according to ancient materialism (see materialism sense 1a) the universe is composed

Did you know?

Some ancient philosophers believed that matter is infinitely divisible, that any particle, no matter how small, can always be divided into smaller particles. Others believed that there must be a limit and that everything in the universe must be made up of tiny indivisible particles. Such a hypothetical particle was called atomos in Greek, which means “indivisible.” According to modern atomic theory, all matter is made up of tiny particles named atoms from the ancient Greek atomos. However, it has turned out that atoms are not indivisible after all. Indeed, the splitting of atoms can be used to produce vast amounts of energy, as in atom bombs.

Example Sentences

There is not an atom of truth to what he said. give me just one atom of information about the novel's surprise ending

Recent Examples on the Web There’s nothing natural about the atom bomb, or a self replicating nanobot that will eat the Earth.

Jon Blistein, Rolling Stone, 9 Sep. 2022 Imagine a rock smashing into the ground with a force 150 times greater than an atom bomb.

Michael Salerno, The Arizona Republic, 6 Sep. 2022 Pale reeds swoop around the perimeter like electrons orbiting an atom’s nucleus.

Cate Mcquaid, BostonGlobe.com, 30 Aug. 2022 In the mid-1950s, the US government, and the Pentagon, in particular, hoarded information as compulsively as atom bombs.

WIRED, 19 Aug. 2022 And that subsequence super atom is very good at slowing the speed of light.

Joshua Hawkins, BGR, 16 Aug. 2022 Two-for-one Graphene and molybdenum disulfide form sheets that are only one atom thick—all the chemical bonds holding the sheet together force it into a planar structure.

John Timmer, Ars Technica, 27 Apr. 2022 Per Deadline, Nolan's twelfth movie Oppenheimer focuses on theoretical physicist J. Robert Oppenheimer, who played a key role in the research process and development of the atom bomb during the 1940s.

Emma Dibdin, Town & Country, 21 July 2022 That’s what a permanent magnet is — a bunch of little superconducting loops, one in each atom.

Sumeet Kulkarni, Los Angeles Times, 2 July 2022 See More

单词	atom
释义	atom noun at·om ˈa-təm 1 a : the smallest particle of an element that can exist either alone or in combination an atom of hydrogen b : the atom considered as a source of vast potential constructive or destructive energy … a largely forgotten legacy of this country's conquest of the atom. William J. Broad … when Congress passed the Atomic Energy Act in 1954 and allowed private utilities to "harness the atom." Barry Werth 2 : a tiny particle : bit There's not an atom of truth in what he said. 3 : one of the minute indivisible particles of which according to ancient materialism (see materialism sense 1a) the universe is composed Did you know? Some ancient philosophers believed that matter is infinitely divisible, that any particle, no matter how small, can always be divided into smaller particles. Others believed that there must be a limit and that everything in the universe must be made up of tiny indivisible particles. Such a hypothetical particle was called atomos in Greek, which means “indivisible.” According to modern atomic theory, all matter is made up of tiny particles named atoms from the ancient Greek atomos. However, it has turned out that atoms are not indivisible after all. Indeed, the splitting of atoms can be used to produce vast amounts of energy, as in atom bombs. Synonyms bit crumb dribble fleck flyspeck grain granule molecule morsel mote nubbin nugget particle patch scrap scruple snip snippet speck tittle See all Synonyms & Antonyms Example Sentences There is not an atom of truth to what he said. give me just one atom of information about the novel's surprise ending Recent Examples on the Web There’s nothing natural about the atom bomb, or a self replicating nanobot that will eat the Earth. Jon Blistein, Rolling Stone, 9 Sep. 2022 Imagine a rock smashing into the ground with a force 150 times greater than an atom bomb. Michael Salerno, The Arizona Republic, 6 Sep. 2022 Pale reeds swoop around the perimeter like electrons orbiting an atom’s nucleus. Cate Mcquaid, BostonGlobe.com, 30 Aug. 2022 In the mid-1950s, the US government, and the Pentagon, in particular, hoarded information as compulsively as atom bombs. WIRED, 19 Aug. 2022 And that subsequence super atom is very good at slowing the speed of light. Joshua Hawkins, BGR, 16 Aug. 2022 Two-for-one Graphene and molybdenum disulfide form sheets that are only one atom thick—all the chemical bonds holding the sheet together force it into a planar structure. John Timmer, Ars Technica, 27 Apr. 2022 Per Deadline, Nolan's twelfth movie Oppenheimer focuses on theoretical physicist J. Robert Oppenheimer, who played a key role in the research process and development of the atom bomb during the 1940s. Emma Dibdin, Town & Country, 21 July 2022 That’s what a permanent magnet is — a bunch of little superconducting loops, one in each atom. Sumeet Kulkarni, Los Angeles Times, 2 July 2022 See More Word History Etymology Middle English, from Latin atomus, from Greek atomos, from atomos indivisible, from a- + temnein to cut First Known Use 15th century, in the meaning defined at sense 3 Phrases Containing atom atom smasher atom smasher Kids Definition atom noun at·om ˈa-təm 1 : the smallest particle of an element that can exist alone or in combination carbon atoms 2 : a tiny particle : bit "I don't believe there's an atom of meaning in it." Lewis Carroll, Alice's Adventures in Wonderland Medical Definition atom noun at·om ˈat-əm : the smallest particle of an element that can exist either alone or in combination atom noun as in particle a very small piece give me just one atom of information about the novel's surprise ending Synonyms & Similar Words Relevance particle molecule speck fleck bit grain patch snippet scrap crumb granule mote mouthful fragment sliver shred nubbin tittle lick nugget morsel drop fraction dribble scruple bite flyspeck snip portion trace shard iota section whisper ounce dash whit minim halfpenny pinch kenning splinter touch nibble taste jot part chip streak ace suspicion smidgen mite nutshell strain flake ha'penny haet clipping modicum spot smatter driblet smidgin dab smidgeon tidbit paring titbit shaving shiver smidge smithereens Antonyms & Near Antonyms slab chunk lump mass quantity barrel mountain volume bucket abundance hunk gob stack deal pile bushel wealth loads pot raft heaps profusion peck wad scads See More
随便看	chuckingly chuckle chuckled chucklehead chuckleheaded chuckleheads chuckler chucklers chuckles chucklesome chuckling chucklingly chucklings chuckram chuckrum chucks chucks (out) chucks out chuckwagon chuckwalla chuckwallas chucky Chucunaque chucunaques chud

atom

noun

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Synonyms

Example Sentences

Word History

Phrases Containing atom

Kids Definition

noun

Medical Definition

noun

noun