Phrase guide

atomic theory

noun · 4 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

The theory that all gross matter is composed of atoms.

Definition source: English Wiktionary via Wiktextract

Topics: natural-sciences, physical-sciences, physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Any of several theories that explain the structure of the atom, and of subatomic particles.

Definition source: English Wiktionary via Wiktextract

Topics: natural-sciences, physical-sciences, physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

(chemistry) any theory in which all matter is composed of tiny discrete finite indivisible indestructible particles

Definition source: Princeton WordNet 3.0

Examples

  • the ancient Greek philosophers Democritus and Epicurus held atomic theories of the universe

Meaning relationships

Synonyms: atomism, atomist theory, atomistic theory

Antonyms: none provided

Broader terms: theory

4

noun

Meaning 4

a theory of the structure of the atom

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: scientific theory

Narrower terms: Bohr theory, Rutherford atom

History

Etymology

No etymology was provided for this word.

Across languages

Translations

8 source translations are retained for this English entry.

  • Chinese Mandarin: 原子論 /原子论 (yuánzǐlùn) — theory that all gross matter is composed of atoms
  • Chinese Mandarin: 原子說 /原子说 (yuánzǐshuō) — theory that all gross matter is composed of atoms
  • Dutch: atomisme — theory that all gross matter is composed of atoms
  • Finnish: atomiteoria — theory that all gross matter is composed of atoms
  • Chinese Mandarin: 原子理論 /原子理论 (yuánzǐ lǐlùn) — theory that explains the structure of the atom
  • Chinese Mandarin: 原子結構理論 /原子结构理论 (yuánzǐ jiégòu lǐlùn) — theory that explains the structure of the atom
  • Dutch: atoomtheorie — theory that explains the structure of the atom
  • Finnish: atomiteoria — theory that explains the structure of the atom