atom Meaning in the Cambridge English Dictionary Cambridge dictionaries logo

Meaning of “atom” in the English Dictionary

"atom" in British English

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atomnoun [C]

uk   /ˈæt.əm/  us   /ˈæt̬-/
B2 the ​smallestunit of any ​chemicalelement, consisting of a ​positive nucleussurrounded by ​negative electrons. Atoms can ​combine to ​form a molecule: A ​molecule of ​carbondioxide (CO2) has one ​carbon atom and two ​oxygen atoms.figurative He hasn't an atom ofsense (= he has no ​sense), that ​boy.

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(Definition of atom from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"atom" in American English

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atomnoun [C]

 us   /ˈæt̬·əm/
physics the ​smallestunit of any ​chemicalelement, consisting of a ​positivenucleussurrounded by ​negativeelectrons. Atoms can ​combine to ​form a ​molecule.
(Definition of atom from the Cambridge Academic Content Dictionary © Cambridge University Press)
Translations of “atom”
in Korean 원자…
in Arabic ذَرَّة…
in Malaysian atom, sedikit pun…
in French atome, parcelle…
in Russian атом…
in Chinese (Traditional) 原子…
in Italian atomo…
in Turkish atom…
in Polish atom…
in Spanish átomo, ápice, pizca…
in Vietnamese nguyên tử, vật nhỏ…
in Portuguese átomo…
in Thai อะตอม, ปริมาณที่น้อยมาก…
in German das Atom, das Körnchen…
in Catalan àtom…
in Japanese 原子…
in Chinese (Simplified) 原子…
in Indonesian atom, sedikit…
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