- 4th century bc, Greek navigator. He was the first Greek to visit and describe the coasts of Spain, France, and the British Isles and may have reached Iceland
Examples from the Web for pytheas
Pytheas said that Thule was six days' sail north of Britain.
Pytheas, who discovered the British Isles, was "a great mathematician."
But it is evident that Pytheas had more than this business motive for his journey.
Pytheas also furnished information about the sea on the other side of Thule.
It is, therefore, impossible to decide what Pytheas himself said.