giga-

UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈɡɪɡə/, /ˈɡaɪɡə/


WordReference Random House Unabridged Dictionary of American English © 2026
giga-, 
  1. Mathematicsa combining form meaning "billion,'' used in the formation of compound words:gigabyte.
  • Greek gígās giant

Collins Concise English Dictionary © HarperCollins Publishers::
giga- / ˈɡɪɡə ˈɡaɪɡə/
  1. denoting 109: gigavolt
    Symbol: G
  2. (in computer technology) denoting 230: gigabyte
Etymology: from Greek gigas giant
'giga-' also found in these entries (note: many are not synonyms or translations):
G - flops - gig - gigabit - gigabyte - gigacycle - gigaelectron volt - gigaflop - gigahertz - gigaton - gigawatt - gigot - gigue - metric system

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