Final answer:
Dimmesdale means the holiness of a human heart when he refers to the sanctity of it.
Step-by-step explanation:
Dimmesdale means the holiness of a human heart when he refers to the sanctity of it. The sanctity of a human heart refers to the sacredness or the divine nature of one's heart. In Nathaniel Hawthorne's novel, 'The Scarlet Letter,' Dimmesdale discusses the sanctity of a human heart in the context of morality, purity, and righteousness.