Definition of gigantic adjective from the Oxford Advanced Learner's Dictionary

 

gigantic

 adjective
adjective
BrE BrE//dʒaɪˈɡæntɪk//
 
; NAmE NAmE//dʒaɪˈɡæntɪk//
 
 
jump to other results
extremely large synonym enormous, huge a gigantic house The problem was beginning to take on gigantic proportions. The bomb caused a gigantic explosion. Word Origin early 17th cent. (in the sense ‘like or suited to a giant’): from Old French, via Latin from Greek gigas, gigant- + -ic.
See the Oxford Advanced American Dictionary entry: gigantic