haplography

/hæpˈlɒɡ.ɹə.fi/

Etymology

From haplo- + -graphy.

noun

Accidental omission of a letter or letter group that should be repeated in writing, for example, mispell for misspell.“In the apparatus of Trounce's edition, dittography occurs at line 266, haplography at line 352, and there are numerous erasures and corrections within the text.”