Dionysius of Chalcedon ( el, Διονύσιος; fl. 320 BC) was a

Greek philosopher Ancient Greek philosophy arose in the 6th century BC, marking the end of the Greek Dark Ages. Greek philosophy continued throughout the Hellenistic period and the period in which Greece and most Greek-inhabited lands were part of the Roman Empire ...

and

dialectician A philosopher is a person who practices or investigates philosophy. The term ''philosopher'' comes from the grc, φιλόσοφος, , translit=philosophos, meaning 'lover of wisdom'. The coining of the term has been attributed to the Greek th ...

connected with the

Megarian school The Megarian school of philosophy, which flourished in the 4th century BC, was founded by Euclides of Megara, one of the pupils of Socrates. Its ethical teachings were derived from Socrates, recognizing a single good, which was apparently combined ...

. He was a native of

Chalcedon Chalcedon ( or ; , sometimes transliterated as ''Chalkedon'') was an ancient maritime town of Bithynia, in Asia Minor. It was located almost directly opposite Byzantium, south of Scutari (modern Üsküdar) and it is now a district of the cit ...

on the coast of

Bithynia Bithynia (; Koine Greek: , ''Bithynía'') was an ancient region, kingdom and Roman province in the northwest of Asia Minor (present-day Turkey), adjoining the Sea of Marmara, the Bosporus, and the Black Sea. It bordered Mysia to the southwest, Pa ...

. Dionysius was the person who first used the name ''Dialecticians'' to describe a splinter group within the Megarian school "because they put their arguments into the form of question and answer". One area of activity for the dialecticians was the framing of

definition A definition is a statement of the meaning of a term (a word, phrase, or other set of symbols). Definitions can be classified into two large categories: intensional definitions (which try to give the sense of a term), and extensional definitio ...

s, and

Aristotle Aristotle (; grc-gre, Ἀριστοτέλης ''Aristotélēs'', ; 384–322 BC) was a Greek philosopher and polymath during the Classical period in Ancient Greece. Taught by Plato, he was the founder of the Peripatetic school of phil ...

criticises a definition of life by Dionysius in his '' Topics'':Aristotle, ''Topics'' vi. 10 Dionysius is also reported to have taught

Theodorus the Atheist Theodorus the Atheist ( el, Θεόδωρος ὁ ἄθεος; c. 340 – c. 250 BCE), of Cyrene, was a Greek philosopher of the Cyrenaic school. He lived in both Greece and Alexandria, before ending his days in his native city of Cyrene. As a C ...

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References

* * * {{Authority control 4th-century BC Greek people 4th-century BC philosophers Ancient Chalcedonians Natural philosophers Megarian philosophers