Pla·ton·ic 
(plə-tŏnĭk, plā-)
(plə-tŏnĭk, plā-)adj.
1. Of, relating to, or characteristic of Plato or his philosophy: Platonic dialogues; Platonic ontology.
2. often platonic Friendly or affectionate without involving sexual relations: platonic love.
3. often platonic Speculative or theoretical.
[After Plato.]
Pla·toni·cal·ly adv.