[ they-leez ]
/ ˈθeɪ liz /
Save This Word!

c640–546? b.c., Greek philosopher, born in Miletus.
"Is" it time for a new quiz? "Are" you ready? Then prove your excellent skills on using "is" vs. "are."
Question 1 of 7
IS and ARE are both forms of which verb?
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use Thales in a sentence

British Dictionary definitions for Thales

/ (ˈθeɪliːz) /

?624–?546 bc, Greek philosopher, mathematician, and astronomer, born in Miletus. He held that water was the origin of all things and he predicted the solar eclipse of May 28, 585 bc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for Thales

[ thālēz ]
624?-546? bce

Greek philosopher who was considered by later Greek writers to be a founder of geometry and abstract astronomy. He is said to have accurately predicted a solar eclipse in 585 bce, although this and certain other stories associated with Thales have been questioned by modern scholars.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Cultural definitions for Thales

[ (thay-leez) ]

An ancient philosopher of Greece, called by some the first genuine Greek philosopher. He lived about 600 years before Jesus and about 150 years before Socrates.

notes for Thales

Thales is known for predicting an eclipse and thus contributing to the idea that the heavens were separate from the gods.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.