pythagorean

a. [ L. Pythagoreus, Gr. &unr_;. ] Of or pertaining to Pythagoras (a Greek philosopher, born about 582 b. c.), or his philosophy. [ 1913 Webster ]

The central thought of the Pythagorean philosophy is the idea of number, the recognition of the numerical and mathematical relations of things. Encyc. Brit. [ 1913 Webster ]

Pythagorean proposition (Geom.), the theorem that the square described upon the hypothenuse of a plane right-angled triangle is equal to the sum of the squares described upon the other two sides. --
Pythagorean system (Astron.), the commonly received system of astronomy, first taught by Pythagoras, and afterward revived by Copernicus, whence it is also called the Copernican system. --
Pythagorean letter. See Y. [ 1913 Webster ]