Mismerge

This merge criterion guarantees that regions whose properties have been drastically altered by previous merges are not mismerged on the basis of their original properties .

Source: wiktionary

Fig. 7.10 An irregular-shaped region with a "bottle-neck"; two regions R1 and R2 are mismerged into one elementary region.

Source: wiktionary

Thus, they have been known to mismerge files when the consumers' names are similar and they share seven of nine digits in their SSN.

Source: wiktionary

Spell-check also won't protect you against the famous "mismerge” that has sealed many a candidate's fate (you've described how your fastidious attention to detail will make you a valuable asset to Random House — in your cover letter to Scholastic).

Source: wiktionary