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1.
An invention by you, when you are not sure if it has already been invented.

Used to indicate something is your invention, but you think it may have already been invented.
You invent an artistic style on your own and give it a name, without knowing that the style already existed under a different name.

"This sculpture was painted using my self-invented style 'auto-hand.'"
by ginyudance February 26, 2012