(n.) A hard, black variety of vulcanite. It may be cut and polished, and is used for many small articles, as combs and buttons, and for insulating material in electric apparatus.
Example Sentences:
(1) An increase of LM level of the whole system (M + medium + incubation + cell) was observed during M incubation in optically low-transparent (organic glass) and untransparent (ebonite) cells.
Vulcanite
Definition:
(n.) Hard rubber produced by vulcanizing with a large proportion of sulphur.
Example Sentences:
(1) Dental findings included the presence of healthy and decayed teeth, gold foil restorations, gold and porcelain inlays, amalgam and silicate fillings, and vulcanite and acrylic dentures.
(2) The percentage reporting preventive services increased from 15 to 26% at the expense of those reporting "blood and vulcanite" denistry.
(3) Amalgam restorations were present in people buried from 1875 (114 years ago) and vulcanite dentures from 1882 (107 years ago).