From Longman Dictionary of Contemporary Englishlithiumlith‧i‧um /ˈlɪθiəm/ noun [uncountable] HCEa soft silver-white metal that is the lightest known metal, is used in batteries, and is often combined with other metals. It is a chemical element: symbol Li
Examples from the Corpus
lithium• And I've had an allergic reaction to the oil and lithium grease, or maybe it's the Ecover.• It is not known how lithium salts work.• The doctors put her on lithium and kept her for two weeks.• She started on lithium again, but she hated needing a drug to function.• She decided to continue taking lithium.• It was as if the lithium severed that connection, or clouded it so much as to basically make it ineffective.• He tried using lithium salts to quieten manic patients.Origin lithium (1800-1900) Greek lithos “stone” 