Sub may refer to any of the following:
In programming, a sub is short for the word subroutine.
With speakers, a sub is short for the word subwoofer.
With text and typography, sub is short for the word subscript.
In e-mail and messages, sub is short for the word subject.
When referring to HTML, the tag is used to designate subscript text.
In online communication, sub is short for subscribe or subscription.
A sub may also be short for “substitute,” see our subst command page for information about the MS-DOS and Windows command line command.
See our full list of computer-related terms containing sub using our word and letter search.
