noun
molar; back tooth
Anatomical term for the posterior grinding teeth. Compare with 大臼歯 (molar) and 小臼歯 (premolar).
See also: 大臼歯
後臼歯は食べ物をすりつぶす役割を果たす。
The molars play a role in grinding food.
小臼歯 are premolars, located between canines and molars; 後臼歯 is a more general term for back teeth.
Compound of 後 (back) + 臼歯 (molar). The exact historical derivation is uncertain, but the term is used in anatomical contexts.