I was always taught as a kid that my name, Katherine, meant pure. I like this theory better.
"she is the summit"
Another potential origin of the name is the Armenian word Կատար, gadar, meaning peak or summit. In Armenian, the equivalent name is Կատարինէ, Gadarine; coincidentally the ending ինէ -ine is homophonous with the modern Greek verb είναι ‘she is’, suggesting a macaronicphrase meaning “she is the summit”.