What is the untranslated greek word for Plato's Form of Beauty?

Question

I've read translated versions of Plato's Phaedo and Republic, in which he discusses the essential Forms of Goodness, Beauty, etc. I was just curious what what his untranslated ancient Greek word/phrase was for the concept of the Form of Beauty.

I know this might be a long shot because its pretty specific, but I thought it was worth a try.

Answer 1

καλλός.