Definition - What does Word Wrap mean?
Word wrap is a word processing feature that forces all text to be confined within defined margins. When a line of text is filled, the word processor automatically moves the text to the next line, so the user doesn't have to press the return key after every line. Word wrap also occurs if the document's margins are changed.
Techopedia explains Word Wrap
Word wrapping is performed using algorithms. It is generally implemented based on minimum word length to provide the best appearance and readability.