mega-
mega- • comb. form 1. very large in size, extent, capacity, or amount: megalith.2. (in units of measurement) denoting a factor of one million (106): megahertz megadeath.3. Comput. denoting a factor of 220.
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mega-
1. A prefix denoting large size; e.g. meganucleus, megasporangium.
2. Symbol M. A prefix used in the metric system to denote one million times. For example, 106 volts = 1 megavolt (MV).
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mega-
1. large size or abnormal enlargement or distension.
2. a million.
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