from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A thing that is out of its proper place; the geographic counterpart to anachronism.
from The Century Dictionary and Cyclopedia
- n. Faulty or incongruous arrangement; specifically, in art, an inharmonious grouping of objects.
From Ancient Greek ἀνά ("against") and τόπος ("place"); apparently by analogy with anachronism. (Wiktionary)
Plautus 'frequent forgetfulness of his Greek environment and the interjection of Roman references -- what De Quincey calls "anatopism" -- is another item of careless composition too well known to need more than passing mention.