A pre-Socratic Greek philosopher from Miletus in Asia Minor.

A plant of the species Arabidopsis thaliana, native to Eurasia.

plural of thale cress

(geometry) A theorem stating that if A, B, and C are distinct points on a circle where the line AC is a diameter, the angle ABC is a right angle.

(historical, numismatics) A monetary unit used in a number of central and northern European countries, known locally as daalder (Netherlands), daler (Scandinavia), Taler, Thaler (Germany), etc.

plural of thaler

A surname from German.

plural of Thaler

Feeding on fresh vegetable matter.

Of or relating to Thales of Miletus (c.624–c.546 BC), pre-Socratic Ancient Greek philosopher who attempted to explain natural phenomena without reference to mythology, and who applied geometry to mathematical problems.