catoptromancy means divination by use of mirrors, or other reflective surfaces. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Why “catoptromancy” is a great word
CATOPTROMANCY — [Noun] Divination by interpreting visions seen in a mirror or other polished, reflective surface. From the Ancient Greek κάτοπτρον (kátoptron, "mirror") and the combining form -mancy ("divination"). First attested in English in the 1610s. Unlike scrying (which encompasses any meditative gaze into water, flame, or smoke) or crystallomancy (which fixes upon the specific depths of a crystal sphere), catoptromancy is bound to the cold, flat plane of human-made reflection. It is the deliberate dimming of a room to consult a silvered glass, the distorted world swimming in a polished obsidian disc, or the solitary candle-flame doubled in a darkened glass—a silent interrogation of the self, projected onto a void that offers only a perfect, depthless copy of the world.
Etymology
From the Ancient Greek κάτοπτρον (kátoptron, “mirror”) + -mancy.
noun
- Divination by use of mirrors, or other reflective surfaces.“1660, Urquhart tr. Rabelais, Gargantua & Pantagruel iii. xxv.
Her Trippa going on in his Discourse, said by Catoptromancy, likewise held in such account by the Emperor Didius Julianus, That by means thereof, he ever and anon foresaw all that which at any time did happen or befal unto him: Thou shalt not need to put on thy Spectacles; for in a Mirror thou wilt see her as clearly and manifestly Nebr”