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Definition of zero
zero - adj. indicating the absence of any or all units under consideration; indicating an initial point or origin; having no measurable or otherwise determinable value; of or relating to the null set (a set with no members); noun the quantity that registers a reading of zero on a scale; a mathematical element that when added to another number yields the same number; a quantity of no importance; verb adjust (as by firing under test conditions) the zero of (a gun); adjust (an instrument or device) to zero value.
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