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Adjective: gigantic  jI'gan-tik
  1. So exceedingly large or extensive as to suggest a giant or mammoth
    "a gigantic redwood"; "gigantic disappointment"
    - mammoth

See also: big, giant, large

Encyclopedia: Gigantic

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gig
giga-
giga electron volt
gigabit
gigabyte
gigacycle
gigacycle per second
gigaelectron volt
gigaflop
gigahertz
gigantic
gigantically
gigantism
Gigartinaceae
gigawatt
gigayear
giggle
giggler
giggly
GIGO
gigolo