Simulacra are copies of things that either don't have an original or no longer have one. The word simulacrum comes from the Latin word simulacrum, which means "likeness, semblance."
Definition: Simulacrum. SIMULACRUM (simulacra): Something that replaces reality with its representation. Jean Baudrillard in "The Precession of Simulacra" defines this term as follows: "Simulation is no longer that of a territory, a referential being, or a substance.