Dioron is a demon in Mathers’ translation of the Sacred Magic of Abramelin the Mage.. Mather suggests his name is related to the Greek meaning “delay.” He is a servant of the arch-fiendsAstaroth and Asmodeus. In other Abramelin works this demon’s name is Dosom. A.G.H.
Belanger, Michelle. The Dictionary of Demon: Names of the Damneds. Llewellen Publications. 2010. ebook.