English version


From Longman Dictionary of Contemporary Englishgiga-giga- /ɡɪɡə/ prefix [in nouns]  a billion – used with units of measurementFrom Longman Business Dictionarygiga-giga- /gɪgə/ prefix used in units of measurement to mean one thousand million. For example, one GIGAWATT of electricity is equal to one thousand million WATTS177 gigatons of coal
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