M. H.

"M. H." typically refers to the initials of a person's name, often used as a way to abbreviate or cite someone formally without using their full name. In academic or professional contexts, it might stand for a specific individual, such as "Martin H." or "Mary H." It can also denote initials in signatures, titles, or references. Without additional context, it generally indicates a person's initials rather than a specific concept or term. If used in a particular field or document, it’s best to look for accompanying information to clarify its exact meaning.