From Longman Dictionary of Contemporary Englishcolossusco‧los‧sus /kəˈlɒsəs $ kəˈlɑː-/ noun [countable] BIGIMPORTANTsomeone or something that is extremely big or extremely important an intellectual colossus like Leonardo
Examples from the Corpus
colossus• The merged bank will be a colossus.• They managed to destroy a colossus in a year.• This flawed titan bestrides the history of his age like a colossus.• Entertainment colossus MCA Inc. was purchased for $6.6 billion.Origin colossus (1300-1400) Latin “very large statue”, from Greek kolossos 