Definition of "slabbing" []

• Present participle of slab. (verb)

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• "I have seen some issues sell for insane amounts on the eBay, in particular the Miracleman/Kid Miracleman battle issue #15 which has sold for hundreds of dollars, even without the artificial pricing bump that a CGC "slabbing" would have given it."
• "Then again, these are CGC-graded artifacts, probably never to be read:Comics graded by CGC are placed in an inner well (a sealed Barex sleeve, similar to Mylar), then sonically sealed in a hard plastic, tamper-evident holder (the process is often referred in slang as "slabbing") with a label at the top indicating the grade, page quality and any notes. . ."
• "The slabbing of books by the CGC doesn't help, due to the "multiples of guide" mindset that sends copies locked into plastic turtle shells through the roof pricewise, but a good chunk of the books pictured in this post were acquired for very modest dollars."