If you are Sacha Baron Cohen, yes.

Use of this word predates Sacha Baron Cohen's entire existence.

Nope. You see an option for a plural here? http://www.merriam-webster.com/dictionary/learning

Dictionaries are descriptive, not prescriptive. They can only tell you if something is a word, not whether something isn't a word.

Well certainly there is no law against using made-up words. If that's what you want to do, have at it.

At least it will help people get their buzzword bingo cards filled up sooner.

Dictionaries ain't arbiters of the English language. And quite fortunately so, I should note.