Mega-
Metric prefix / From Wikipedia, the free encyclopedia
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For other uses, see Mega (disambiguation).
Mega is a unit prefix in metric systems of units denoting a factor of one million (106 or 1000000). It has the unit symbol M. It was confirmed for use in the International System of Units (SI) in 1960. Mega comes from Ancient Greek: μέγας, romanized: mégas, lit. 'great'.[1]
Look up mega- in Wiktionary, the free dictionary.