Which abbreviation represents the unit grain?

Which abbreviation represents the unit grain?

• A. Gr
• B. Grain
• C. Grams
• D. Gramma

Answer: (A)

Grain is a small unit of mass used in older measurement systems and still seen in medicine and ballistics. Its standard abbreviation is gr (often written gr.). That makes the option Gr the correct one, since it matches the shorthand for grain. The full word Grain is not an abbreviation, Grams refers to the metric unit gram (abbreviated g), and Gramma isn’t used as a unit. For context, 1 grain is about 0.0648 grams.

Grain is a small unit of mass used in older measurement systems and still seen in medicine and ballistics. Its standard abbreviation is gr (often written gr.). That makes the option Gr the correct one, since it matches the shorthand for grain. The full word Grain is not an abbreviation, Grams refers to the metric unit gram (abbreviated g), and Gramma isn’t used as a unit. For context, 1 grain is about 0.0648 grams.