What does the prefix "hemi" specifically denote?

The prefix "hemi" specifically denotes "partial" or "half." It is derived from the Greek word "hemi," meaning "half." In various contexts, such as in medicine or geometry, when something is described as "hemisphere," it refers to half of a sphere. Similarly, "hemiplegia" refers to paralysis of one half of the body, underscoring the notion of partial involvement. Understanding this prefix helps in recognizing that it indicates a division or a non-complete aspect of whatever it modifies.

In contrast, the other options introduce different meanings that do not align with the definition of "hemi." "All" implies completeness, "new" suggests something that has not existed before, and "between" indicates a positional relationship, which are distinctly different from the notion of partiality that "hemi" conveys.