What does "大体" mean in gross anatomy?

The term “dati” is a shortened form derived from “Gross anatomy.” The word “dati” is the translation of the English term “Gross,” which means “macroscopic” or “overall.” This name signifies: an anatomy that comprehensively deals with organs and tissues visible to the naked eye, and it is a discipline contrasted with “microscopic anatomy,” “neuroanatomy,” and others. It has the same meaning as the “dati” in the Chinese phrase “dati yiran” (roughly speaking).