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|Noun||1.||definite quantity - a specific measure of amount|
quantity, measure, amount - how much there is or how many there are of something that you can quantify
acid value - (chemistry) the amount of free acid present in fat as measured by the milligrams of potassium hydroxide needed to neutralize it; "as the glycerides in fat slowly decompose the acid value increases"
chlorinity - a measure of the quantity of chlorine or other halides in water (especially seawater)
number - a concept of quantity involving zero and units; "every number has a unique position in the sequence"
quire - a quantity of paper; 24 or 25 sheets
ream - a quantity of paper; 480 or 500 sheets; one ream equals 20 quires
solubility - the quantity of a particular substance that can dissolve in a particular solvent (yielding a saturated solution)
toxicity - the degree to which something is poisonous