Welcome to the Oxford Classical Dictionary

Learn more

Letter from the editor



"Apollonius of Perga (fl. 200 BCE) was the youngest of the three leading mathematicians of the Hellenistic age, the other two being Euclid and Archimedes. His most significant work was ConicsConics, comprising..." – By Michael N. Fried

Plato, ethical and political thought

"Plato’s dialogues are divided into Early, Middle, and Late. The early dialogues accept Psychological and Rational Eudaimonism. The four cardinal virtues form a whole identical with knowledge of what is overall best for the person..." – By Christopher Bobonich

What's New to the OREs

In April 2024, 102 full new articles and 4 revised articles, spread across 23 subjects, have been published on the Oxford Research Encyclopedias platform.

Find out more about the newest discipline to be added: the Oxford Research Encyclopedia of Food Studies.

One More Encyclopedia Available via Subscription and Perpetual Access

On January 30, after a successful free period during development, the Oxford Research Encyclopedia of Physics has been made available via subscription and perpetual access to libraries and institutions worldwide.

Browse all ORE physics articles

Explore Oxford Scholarly Editions

Oxford University Press’s Greek and Latin editions and translations, including the Oxford Classical Texts series, are now available online.

Explore by Discipline

Working with international communities of scholars across all fields of study, we are developing new comprehensive collections of in-depth, peer-reviewed summaries on an ever-growing range of topics.

For Librarians

Oxford University Press offers a variety of tools to help you promote your access to the Oxford Research Encyclopedias and get the most out of these resources.

Maps of the Ancient World

Explore our selection of maps from the Bronze age to the reign of Constantine.