What is the abbreviation for "gram"?

The abbreviation for "gram" is represented by the letter "g." This is the standard and internationally recognized symbol used in scientific and medical contexts to denote grams as a unit of mass. The use of "g" is consistent in various measurements, making it clear and concise, which is crucial for accuracy in these fields.

Other options such as "gt," "gr," and "gm" do not accurately represent the abbreviation for gram in the context of metric measurements. "gt" may lead to confusion as it is not a recognized abbreviation, while "gr" commonly refers to "grain," a different unit of measurement. On the other hand, "gm" is an older abbreviation that is less frequently used in current scientific literature, with "g" being preferred for clarity and standardization.