You're telling me that "grok" isn't a normal English verb either? What a sad day :-(
Grok is a term from Robert A. Heinlein's book "Stranger in a strange land."
I can see why finding out that these amazing words are not 'official' English could make you sad, but for me I find it amazing and encouraging, as this is exactly the way that some language is formed! They are so full of future potential.
I look forward to seeing what terms 'make it' into major dictionaries in the future.
(edit: oh come on, you know it'll end up in there eventually!)
grep, v. Computing. 1. intr. To search for a string of characters using the grep command. Also trans.: to search (a file) in this way. 2. trans. slang (usu. humorous). Of a person: to search; to scan visually.
Both marked: DRAFT ENTRY June 2010
If there's a term that you think matches that criteria but isn't included you can gather up some relevent citations and send them in and they'll consider it for addition.
To get a transparent look at how they do this kind of thing have a look at:
The OED ran an open research project to gather evidence of science fiction terms as they figured the online SF community would be much better at finding this evidence than their own researchers.
People look at me funny when I point that out.