What does geocentric mean?
Geocentric describes something based on the idea that Earth is at the center. In astronomy, a geocentric model attempts to explain the observed movements of the Sun, Moon, and planets by treating Earth as the fixed center of the cosmos. Such models were prominent in many ancient and medieval traditions and were refined by European astronomers before the Copernican Revolution. The word is also used more broadly for perspectives that place the Earth, humanity, or human experience at the center of attention. In contemporary scientific discussion, geocentric is most often encountered in historical or comparative accounts, especially when contrasted with a heliocentric model. The term is precise and intellectually neutral, although it may sometimes suggest an outdated or deliberately Earth-centered way of thinking. Its combination of Greek roots for “earth” and “center” makes its central meaning especially memorable.
adjectiveRelating to a view of the universe in which Earth is at the center. It may describe a model, theory, worldview, or perspective based on that idea.
- Relating to or based on a model or worldview in which Earth is at the center.
"The evidence of planetary motion eventually undermined the geocentric model that had dominated European astronomy for centuries."
"The lecture explained how early astronomers modified geocentric models to account for the observed motions of the planets."
"A geocentric worldview places human beings and their earthly surroundings at the center of concern."
For most of human history, the heavens were imagined as circling Earth—until evidence showed that our planet was the one doing the circling.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does geocentric come from?
The adjective was formed in the early 17th century from Greek gē, meaning “earth,” and the element centric, derived from Latin centrum, meaning “center.” The combining form centric ultimately comes from the Greek kentron, meaning a sharp point or center. Geocentric thus literally describes something organized around the Earth as the center.
Related word forms
How geocentric is actually used
A formal term used chiefly in astronomy, cosmology, the history of science, and philosophical discussion. In astronomy, it usually refers to a model of the universe; in broader discussion, it can characterize a worldview centered on Earth or human experience.
Easily confused with geocentric
A geocentric model places Earth at the center, whereas a heliocentric model places the Sun at the center.