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

Does the following chemical change represented by these symbols violate any of the ideas of Dalton’s atomic theory?

From Textbooks • Feb. 14, 2019

Another philosophy vied with the atomic theory, and instead of posing such bizarre concepts as the infinite vacuum, it turned the universe into a cozy nutshell.

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