Originally Posted by MrJerseyGuy
Deviant's Dictionary
Dictionary.com online
The terms dominant or submissive have absolutely nothing to do with sexuality, but every person has their own terms they groups into the "dominant" and "submissive" definitions. So, basically, it can mean what applies to you is the correct definition for you.
It's a hell of a lot easier to say "I'm a dominant" than it is to say "I'm a sexual top with some interests in bondage, torture, sadism and dominance.