strikeover

[ strahyk-oh-ver ]
/ ˈstraɪkˌoʊ vər /

noun

an act or instance of typing over a character, as one typed in error, without erasing it.
the typed-over character: The letter was full of strikeovers.

Origin of strikeover

First recorded in 1935–40; noun use of verb phrase strike over
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019