Real Dictionary

positive
a person or thing that regulates [...]
A positive fact, situation, or experience is pleasant and helpful to you in some way.
If you are positive about things, you are hopeful and confident, and think of the good aspects of a situation rather than the bad ones.
of, relating to, or making predictions [...]
something that is positive [...]
the act or an instance of selecting or the state of being selected [...]
the act or process of regulating [...]
the desirability of a thing, often in respect of some property such as usefulness or exchangeability; worth, merit, or importance [...]
the return of part of the output of an electronic circuit, device, or mechanical system to its input, so modifying its characteristics. In negative feedback a rise in output energy reduces the input energy; in positive feedback an increase in output energ
the round or oval shape formed by a line, string, etc, that curves around to cross itself [...]