← Dictionary

atomic

/əˈtɒm.ɪk/
IELTSAcademic
adjective

Atomic means related to atoms, which are the tiny parts that make up matter. It can also mean very small or extremely powerful, especially about energy or weapons.

  • Scientists studied the atomic structure of the metal.
  • The city feared an atomic attack.

Adinary Nuance

Atomic is more scientific than small, tiny, or miniature. It usually refers to atoms, nuclear energy, or something extremely small and basic. In formal writing, atomic sounds precise, while everyday speech often uses tiny or very small instead.

In other languages

Vietnamese
nguyên tử
Spanish
atómico
Chinese
原子
Japanese
原子の
Korean
원자의

Etymology

Atomic comes from Greek atomos, meaning “indivisible.” It entered English through scientific writing in the 17th century, and later became common in physics and nuclear contexts.

Common phrases

atomic energyatomic bombatomic structureatomic number

Synonyms

Related words

Frequently asked questions

Is atomic the same as nuclear?
Not exactly. Atomic is broader, but in modern use both often point to nuclear science or power.
Is atomic a formal word?
Yes. It is common in science, education, and formal writing.
Can atomic mean very small?
Yes, sometimes. It can describe something extremely small or basic.