The quality or state of having been digested, either physically or mentally.
From 'digested' plus the noun suffix '-ness'. This abstract noun form allows the quality of being digested to be discussed as a thing in itself, a pattern common in English for creating nouns from adjectives.
Creating '-ness' nouns is one of English's favorite ways to turn qualities into countable things—we can now talk about digestedness like it's a measurable property, which helped philosophers and scientists discuss mental processes more precisely.
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