Micrograph showing a duodenal biopsy with gastric<unk>  H&E stain In medicine,<unk> is the presence of a particular tissue type at a non-physiological site, but usually co-existing with original tissue in its correct anatomical location. In other words, it implies ectopic tissue, in addition to retention of the original tissue type.
Heterotopia 
Presbyopia
Pseudomyopia
Quadrantanopia
Nyctalopia
Entomopia
Tunnel vision
Cyclopia