Of, relating to, or causing death; A lethal dose. See examples of lethal used in a sentence.

A lethal dose of sleeping pills. Chemicals lethal to fish and aquatic mammals. Add to word list able to cause or causing death; A lethal weapon (definition of lethal from the cambridge academic content dictionary © cambridge university press) Having the potential to cause death, serious harm, or fatal consequences. See example sentences, synonyms, and etymology for the adjective lethal. Definition of lethal adjective in oxford advanced learner's dictionary.

Having the potential to cause death, serious harm, or fatal consequences. See example sentences, synonyms, and etymology for the adjective lethal. Definition of lethal adjective in oxford advanced learner's dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.