Noah Webster
Platonic
PLATON'IC, adjective Pertaining to Plato the philosopher, or to his philosophy, his school or his opinions.
Platonic love, is a pure spiritual affection subsisting between the sexes, unmixed with carnal desires, and regarding the mind only and its excellencies; a species of love for which Plato was a warm advocate.
Platonic year, the great year, or a period of time determines by the revolution of the equinoxes, or the space of time in which the stars and constellations return to their former places in respect to the equinoxes. This revolution, which is calculated by the precession of the equinoxes, is accomplished in about 25, 000 years.