HM
hm is a two-letter combination that serves as an abbreviation in several unrelated domains. In measurement, hm is the SI symbol for hectometer, equal to 100 meters (hectometer or hectometre in British spelling). Hectometers are used for distances that are longer than meters but not practical in kilometers, such as road measurements or field sizes.
In royal and governmental contexts, HM or H.M. is a prefix indicating monarchy or government. It stands
In everyday writing, hm is also an interjection used to express hesitation or contemplation, often written
Other specialized uses are limited and context-dependent, such as acronyms within organizations or informal project names.