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Comprehensive
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lb. abbreviation of "pound," or "pounds," a unit of weight equal to sixteen ounces or 453.592 grams in the avoirdupois weight system, and equal to twelve ounces or 373.242 grams in the apothecaries' and troy weight systems.
ounce1 a unit of weight equal to one sixteenth of a pound or 28.350 grams in the avoirdupois weight system, and equal to one twelfth of a pound or 31.1051 grams in the apothecaries' weight and the troy weight systems. (abbr.: oz.) [1/3 definitions]
oz. abbreviation of "ounce," or "ounces," a unit of weight equal to one sixteenth of a pound or 28.350 grams in the avoirdupois weight system, and equal to one twelfth of a pound or 31.1051 grams in the apothecaries' weight and the troy weight systems.
pennyweight a unit of weight equal to twenty-four troy weight grains, 1.555 grams, or one twentieth of an ounce.
pound2 a unit of weight equal to sixteen ounces or 453.592 grams in the avoirdupois weight system, and equal to twelve ounces or 373.242 grams in the apothecaries' and troy weight systems. (abbr.: lb.) [1/4 definitions]
troy of, expressed, or computed using the troy weight system.