from The American Heritage® Dictionary of the English Language, 4th Edition
- Thales 624?-546? B.C. Greek philosopher who is traditionally considered the first Western philosopher and a founder of geometry and abstract astronomy. He maintained that matter is composed of water.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. A pre-Socratic Greek philosopher from Miletus in Asia Minor.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a presocratic Greek philosopher and astronomer (who predicted an eclipse in 585 BC) who was said by Aristotle to be the founder of physical science; he held that all things originated in water (624-546 BC)
From Ancient Greek Θαλῆς (Thalēs). (Wiktionary)