Defn: A beautiful crystalline compound, SiC, consisting of carbon and silicon in combination; carbon silicide. It is made by heating carbon and sand together in an electric furnace. The commercial article is dark-colored and iridescent. It is harder than emery, and is used as an abrasive.

CARBORUNDUM CLOTH; CARBORUNDUM PAPER
Carborundum cloth or paper.

Defn: Cloth or paper covered with powdered carborundum.

CARBOSTYRIL
Car`bo*sty"ril, n. Etym: [Carbon + styrene.]

Defn: A white crystalline substance, C9H6N.OH, of acid properties derived from one of the amido cinnamic acids.

CARBOXIDE
Car*box"ide, n. Etym: [Carbon + oxide.] (Chem.)

Defn: A compound of carbon and oxygen, as carbonyl, with some element or radical; as, potassium carboxide. Potassium carboxide, a grayish explosive crystalline compound, C6O6K, obtained by passing carbon monoxide over heated potassium.

CARBOXYL
Car*box"yl, n. Etym: [Carbon + oxygen + -yl.] (Chem.)

Defn: The complex radical, CO.OH, regarded as the essential and characteristic constituent which all oxygen acids of carbon (as formic, acetic, benzoic acids, etc.) have in common; — called also oxatyl.

CARBOY Car"boy, n. Etym: [Cf. Ir. & Gael carb basket; or Pers qurabah a sort of bottle.]