is photographic memory one word?
Eidetic memory (/aɪˈdɛtɪk/ eye-DET-ik; more commonly called photographic memory) is the ability to recall an image from memory with high precision for a brief period after seeing it only once, and without using a mnemonic device. ... The word eidetic comes from the Greek word εἶδος (pronounced [êːdos], eidos).