Mahlzeit is a German salutation. It is the short form of a more formal salutation, "Gesegnete Mahlzeit" (archaic term, de: Blessed mealtime). The salutation is commonly used without connection to food or eating in Northern Germany, and this usage, corresponding to something like "hello, everyone" or "I'm off, folks", is becoming more and more widespread in informal settings, such as between office co-workers.
Mahlzeit is a German salutation that corresponds to "Gesegnete Mahlzeit." It can be used without any reference to food or eating in Northern Germany. Its application, similar to saying "hello everyone" or "I'm off," is becoming more widespread among office coworkers in informal settings.