an avoirdupois ounce, weighing 1 16 of an avoirdupois pound, or 28.3495 grams

listen to the pronunciation of an avoirdupois ounce, weighing 1 16 of an avoirdupois pound, or 28.3495 grams
an avoirdupois ounce, weighing 1 16 of an avoirdupois pound, or 28.3495 grams
المفضلات