Medical Dictionary


noun ze·ro \ˈzē-(ˌ)rō, ˈzi(ə)r-(ˌ)ō\
plural zeros also zeroes

Medical Definition of ZERO

:  the arithmetical symbol 0 or 0̸ denoting the absence of all magnitude or quantity
a :  the point of departure in reckoning; specifically :  the point from which the graduation of a scale (as of a thermometer) begins b :  the temperature represented by the zero mark on a thermometer
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