CASEHARDENING
Case"hard`en*ing, n.
Defn: The act or process of converting the surface of iron into steel. Ure.
Note: Casehardening is now commonly effected by cementation with charcoal or other carbonizing material, the depth and degree of hardening (carbonization) depending on the time during which the iron is exposed to the heat. See Cementation.
CASEIC
Ca"se*ic, a. Etym: [Cf. F. caséique, fr. L. caseus cheese.]
Defn: OF or pertaining to cheese; as, caseic acid.
CASEIN
Ca"se*in, n. Etym: [Cf. F. caséine, fr. L. caseur cheese. Cf.
Cheese.] (Physiol. Chem.)
Defn: A proteid substance present in both the animal and the vegetable kingdom. In the animal kindom it is chiefly found in milk, and constitutes the main part of the curd separated by rennet; in the vegetable kingdom it is found more or less abundantly in the seeds of leguminous plants. Its reactions resemble those of alkali albumin. [Written also caseine.]
CASE KNIFE
Case" knife`.
1. A knife carried in a sheath or case. Addison.
2. A large table knife; — so called from being formerly kept in a case.