(1) For xAI's Grok chatbot, see
xAI.
(2) For the encyclopedia, see
Grokipedia.
(3) For the AI company with a Q in its name, see
Groq.
(4) To have a thorough understanding of a subject. The word grok comes from Robert Heinlein's 1961 science fiction novel "Stranger in a Strange Land." In Martian, grok means "to drink in thoroughly," but more specifically, it meant to take something in so thoroughly that it becomes part of you.
Grokking the GIMP
GIMP is a sophisticated paint and image editing program, and this book is about "thoroughly learning GIMP." (Image courtesy of New Riders Publishing.)