LIGNITE Meaning of LIGNITE in English lig ‧ nite /ˈlɪɡnaɪt/ BrE AmE noun [uncountable] [ Date: 1800-1900 ; Language: French ; Origin: Latin lignum 'wood' ] a soft substance like coal, used as ↑ fuel Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012