To understand profoundly through intuition or empathy.
To have a thorough understanding of a subject. The word comes from Robert Heinlein's "Stranger in a Strange Land," and it means "to drink" in Martian. Of course. But more specifically in the book, it meant to take something in so thoroughly that it becomes part of you.
(slang) To fully and completely understand something in all its details and intricacies.
He groks Perl.
I find it exceedingly doubtful that any person groks quantum mechanics.
Origin of grok
- Coined by Robert A. Heinlein in his Stranger in a Strange Land
From American Heritage Dictionary of the English Language, 5th Edition