A word that can be inflected to specify the degree or grade of something.(noun)
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Use "gradable" in a sentence
"In terms of the number of PCGS or NGC certified coins, and of the number of potentially gradable coins, 1793 half cents and 1793 Chain Cents are similar in rarity."
"Another one hundred and fifty to two hundred are probably gradable and have yet to be submitted to one of these two services."
"My guess, however, is that there are even more non-gradable, or borderline-gradable, Chain Cents than 1793 half cents."