[{"Bold_text": "noun", "List Items": ["the state or quality of being opaque .", "something opaque .", "the degree to which a substance is opaque ;capacity for being opaque .", "Photography.the proportion of the light that is absorbed by the emulsion on any given area of a film or plate.", "obscurity of meaning.", "mental dullness.", "Medicine/Medical.an opaque or area in normally clear or transparent tissue, as a cataract of the eye."]}]