琺ほう瑯ろう質しつほうろうしつMeanings1nountooth enamelMedical/dental term for the hard outer layer of a tooth. Often contrasted with エナメル質, which is the more common term in everyday contexts.See also: エナメル質 (エナメルしつ)琺ほう瑯ろう質しつは人じん体たいで最もっとも硬かたい組そ