gR

Gr is a two-letter combination that appears in multiple contexts. It can refer to a traditional unit of mass used in pharmacology and mining, and it also denotes Greece in several standardized codes and domains.

Grain unit: The grain, abbreviated gr., is a small unit of mass equal to 64.79891 milligrams. In the avoirdupois system, 7,000 grains make up a pound. The grain remains in use in some medical contexts and older texts, though metric units have largely supplanted it.

Greece identifiers: The ISO 3166-1 alpha-2 country code for Greece is GR. The country’s internet top-level domain is .gr, and the international vehicle registration code shown on cars is GR. In some international sport contexts, Greece is represented by GRE, but the two-letter GR continues to be used in logistics and data systems.

Typography note: The meaning of GR depends on context, including capitalization and whether it is used as an acronym, a code, or a unit abbreviation; users should consult appropriate standards to avoid ambiguity.