LDLalso: エルディーエルFreq.FrequencyTop 100,000じ字FuriganaMeanings1nounlow-density lipoprotein; LDLMedical term for the cholesterol-carrying particle often called 'bad cholesterol'. Used in health checkups and clinical contexts.健けん康こう診しん断だんでLDLの値あたいが高たかいと言いわれました。I was told at my health checkup that my LDL level is high.