(number theory, recreational mathematics) A magic square that remains magic even if all its numbers are replaced by their kth powers for 1 ≤ k ≤ P.

plural of seasonful

Any of several species of bird in the genus Porphyrio of the family Rallidae.

(philosophy) Gottfried Leibniz's philosophical theory of causation, according to which every substance affects only itself, but all the substances in the world (both bodies and minds) nevertheless ...