Someone who believes that a mate is unnecessary when they can pleasure themselves with their hands.
After multiple failed relationships, Jennifer decided to become manosexual and not rely on a man or woman for pleasure anymore.
The orientation of someone who doesn't need intimacy or a relationship because they're hand can, "get them where they need to be."
"I don't need a boyfriend right now; my friends give me the 'companionship' and my right hand gives me the initimacy..."
"So you're manosexual?"