columnize

column +‎ -ize

columnize (third-person singular simple present columnizes, present participle columnizing, simple past and past participle columnized)

1. (transitive) To format (writing or data) as a series of columns.
   • 2001, Stephen L. Nelson, Julia Kelly, Office XP: the complete reference:

     You can columnize an entire document, everything past the position of the cursor, an entire section, or selected text.