What Does the Word Photopia Mean?

: vision in bright light with light-adapted eyes believed to be mediated by the cones of the retina —opposed to scotopia.

What is an exact replica?

A replica of something is a close — sometimes exact — likeness. ... Someone creating a replica is creating an imitation of the original. The word first appeared in 17th-century Italy, taking its meaning from the word replicare, "to reply or repeat," as used in music.

What does Unenable mean?

: not able : incapable: such as. a : unqualified, incompetent. b : impotent, helpless.