#structural hardness
- Adamantine — Pertaining to diamond, relating to diamond; having the hardness, brilliance, resistance, or structural qualities of a diamond; in dentistry and anatomy, it refers to the tooth enamel, the hardest tissue in the human body. Figuratively or mythologically, the term describes an iron will, an inflexible character, perfect moral purity, or an unyielding resistance in the face of difficulties.
- Adamantine — The feminine form of the adjective 'adamantin'; also, a noun used historically in medical and histological terminology to designate the tooth enamel or an extremely hard structure of epithelial origin. This structural term applies to describe the quality of mineral substances or human traits noted for exceptional resistance, diamond-like transparency, and perfect geometric purity.