1. The seeming increase in size of an object viewed under the microscope; when noted, this increased size is expressed by a figure preceded by ×, indicating the number of times its diameter is enlarged. 2. The increased amplitude of a tracing, as of a muscular contraction, caused by the use of a lever with a long writing arm, i.e., one in which the fulcrum is placed nearer to the muscle than to the writing point. [L. magnifico, pp. -atus, to magnify]
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mag·ni·fi·ca·tion .mag-nə-fə-'kā-shən n
1) the act of magnifying
2 a) the state of being magnified
b) the apparent enlargement of an object by an optical instrument that is the ratio of the dimensions of an image formed by the instrument to the corresponding dimensions of the object called also power
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mag·ni·fi·ca·tion (mag″nĭ-fĭ-kaґshən) [L. magnificatio; magnus great + facere to make] 1. apparent increase in size as under the microscope. 2. the process of making something appear larger, as by use of lenses. 3. the ratio of apparent (image) size to real size.Medical dictionary. 2011.