noun
dentin; dentine
Anatomical term for the hard, calcified tissue forming the bulk of a tooth beneath the enamel.
象牙質はエナメル質の下にある硬い組織です。
Dentin is the hard tissue beneath the enamel.
Cementum, the calcified layer covering the tooth root, distinct from dentin.
Compound of 象牙 (ivory) and 質 (substance, quality), referring to the ivory-like tissue of teeth.