English Reference

Word

cosmology

Phoneticscos·mol·o·gy

US/kɔzˈmɔɫədʒi/

UK/kɒzmˈɒlədʒi/

Definition

n. the study of the universe and how it began. It also refers to a specific set of beliefs about the universe and how it works.

n. the branch of astronomy dealing with the origin and evolution of the universe. It also refers to a system of beliefs concerning the nature of the universe and the relationship between its parts.

Examples

“Modern cosmology explains how the universe expanded after the Big Bang.”

“The ancient Greeks developed early cosmology to explain why the stars moved across the night sky.”

“Advances in observational technology have allowed modern cosmology to map the distribution of dark matter across the cosmos with unprecedented precision.”

Examples

simple

“Modern cosmology explains how the universe expanded after the Big Bang.”

contextual

“The ancient Greeks developed early cosmology to explain why the stars moved across the night sky.”

complex

“Advances in observational technology have allowed modern cosmology to map the distribution of dark matter across the cosmos with unprecedented precision.”

Real-World Examples

Common in science writing

“For cosmology, gravity determines how matter behaves across enormous distances.”
ScienceDaily · 18 Aug 2026
“That creates a limited perspective, she said, “like studying medicine on a single patient.” But even the standard model of cosmology contains major unknowns.”
Smithsonian Magazine · 18 Aug 2026

Etymology

From Medieval Latin cosmologia, from Ancient Greek κόσμος (kósmos, “world”) + -λογία (-logía, “treating of”), combination form of -λόγος (-lógos, “one who speaks (in a certain manner)”). By surface analysis, cosmo- + -logy.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry

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