noun
Medical term for the infectious disease tuberculosis. Commonly abbreviated as TB in English.
結核は早期発見が重要です。
Early detection is important for tuberculosis.
He was hospitalized with tuberculosis.
noun
concretion
Geological term for a hard, compact mass of mineral matter formed within layers of sedimentary rock.
この地層には石灰質の結核が多く含まれている。
This stratum contains many calcareous concretions.