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atomic mass unit a unit equal to one twelfth of the mass of an atom of the most abundant kind of carbon, equal to 1.6605 times 1024 gram.
cal.2 abbreviation of "small calorie," or "small calories," a unit of heat equal to the amount necessary to raise the temperature of one gram of water one degree Celsius, also known as "gram calorie."
calorie a unit of heat equal to the amount necessary to raise the temperature of one gram of water one degree Celsius; gram calorie; small calorie. (abbr.: cal.) [1/3 definitions]
centigram a unit of weight equal to one hundredth of a gram or 0.154 grain.
centimeter-gram-second of or concerning the system of measurement in which the centimeter, gram, and second are the basic units of length, mass, and time.
cg abbreviation of "centigram," or "centigrams," a unit of weight equal to one hundredth of a gram or 0.154 grain.
decigram a unit of weight equal to one tenth of a gram or 1.543 grains.
denier2 a unit of weight, indicating the fineness of yarns such as silk, rayon, or nylon, equal to one gram per 9000 meters of yarn. [1/2 definitions]
dyne a unit of force equal to the amount of force necessary to give a mass of one gram an acceleration of one centimeter per second per second.
g1 abbreviation of "gram," or "grams," the basic unit of weight in the metric system, equal to one thousandth of a kilogram or 15.43 grains.
gram atom the quantity of an element with a weight in grams numerically equal to its atomic weight; gram-atomic weight.
gram molecule the quantity of a substance with a weight in grams numerically equal to its molecular weight; mole; gram-molecular weight.
metric system an international system of weights and measures based on the number ten, in which the basic units are the meter for length, the gram for weight, and the liter for volume.
mg abbreviation of "milligram," or "milligrams," a unit of weight equal to one thousandth of a gram or 0.0154 grain.
microgram a unit of weight equal to one millionth of a gram. [1/2 definitions]
milligram a unit of weight equal to one thousandth of a gram or 0.0154 grain. (abbr.: mg)
rad a unit of energy of absorbed radiation equal to one hundred ergs per gram of material.
roentgen a unit of x-radiation or gamma radiation equal to the amount that produces, in 0.001293 gram or one cubic centimeter of dry air at zero degree Celsius and standard atmospheric pressure, one electrostatic unit of electricity.
seed pearl a very small, often imperfect pearl, weighing less than one quarter of a gram.