noun: something large and powerful
Via Latin from Hebrew liwyathan (whale). Earliest documented use: 1382
Usage (from Wordsmith)
“A merger between the two firms, which both belong to London’s Magic Circle of top five law firms, would have created a legal leviathan with 950 partners and more than 10,000 staff.”
Liz Chong; Partners Quit; The Times (London, UK); Aug 1, 2006.