atomic theory

NOUN

theory that matter is made up of atoms

Synonyms

WEAK

Bohr theory Dirac theory Doctrine of definite proportions Lewis-Langmuir theory Rutherford theory Schrödinger theory Thomson's hypothesis octet theory quantum theory

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In 2019, he registered a trademark for an esoteric video game called “Bohrdom,” a “hybrid of a bullet hell and a racing game” based on atomic theory, in which electrons and protons compete.

From Los Angeles Times • May 3, 2026

Manchester had been steadily attracting scientific prestige after John Dalton pioneered studies in atomic theory and colour blindness, while fellow student James Joule became a household name after his work in energy conservation.

From BBC • Jul. 29, 2023

These fluids mix well together in outer portions of such a planet’s deep interior, but in the depths, the tenets of atomic theory predict they will “unmix” like water and oil.

From Scientific American • Jul. 21, 2021

To account for the existence of isotopes, the second postulate of his atomic theory was modified to state that atoms of the same element must have identical chemical properties.

From Textbooks • Feb. 14, 2019

This was a shocking conclusion, but the indivisible kernels of matter in atomic theory got around the problem of Zeno’s paradoxes.

From "Zero: The Biography of a Dangerous Idea" by Charles Seife