[{"Bold_text": "noun", "List Items": ["the destruction, disappearance, or dissolution of a tissue or part by biochemical activity, as the loss of bone or of tooth dentin.", "Also calledre·ab·sorp·tion[ree-ab-, sawrp, -sh, uh, n, -, zawrp, -]. the selective uptake into the bloodstream of substances previously filtered out of the blood."]}]