From French phantasmagorie, from Ancient Greek φάντασμα (phántasma, "ghost") + possibly either αγορά (agorá, "assembly, gathering") + the suffix -ia or ἀγορεύω (agoreúō, "to speak publicly").
The English variation Phantasmagoria was introduced as the title of M. De Philipsthal's show of optical illusions and mechanical pieces of art in London in 1801 [REF].