'platonic' originates from the name 'Plato', a Greek philosopher, where 'Platonic' referred to his philosophical ideas.

'Platonic' evolved from the Latin 'Platonicus', which was derived from the Greek 'Platonikos', eventually becoming the modern English word 'platonic'.

Initially, it referred to the philosophical ideas of Plato, but over time it evolved to describe non-romantic relationships.