Answer: milesian

AnswerCrossword Clue
MILESIANThe first of the Celts in Ireland.
milesianof or pertaining to Miletus
milesiannoting or pertaining to a school of philosophers of the late 7th to early 5th centuries b.c., including Thales, Anaximander, and Anaximenes, which was primarily concerned with the nature of matter and change
milesiannative of Miletus