Need a short and clear definition for “Dependency Properties”

Question

I\'m trying to figure out what exactly Dependency Properties are, but when I look anywhere for a definition, I only find \"how to use\" but not \"what it is\". Imagine you are

Answer 1

"gives you a bunch of infrastructure to do all the things that you often want to do with a normal property - validate it, coerce it into a proper range, give out change notifications, and a number of other aspects."

WPF Tutorial - Introduction To Dependency Properties