noun🔗Share피지A thick oily substance, secreted by the sebaceous glands of the skin, that consists of fat, keratin and cellular debris."The teenager's skin was oily because of excess sebum. "과도한 피지 때문에 그 십대의 피부는 기름졌다.bodyphysiologysubstanceanatomybiologymedicinechemistryChat with AIVocabulary GamePractice Reading