CASCADE METHOD
Cas*cade" meth"od. (Physics)

Defn: A method of attaining successively lower temperatures by utilizing the cooling effect of the expansion of one gas in condensing another less easily liquefiable, and so on.

CASCADE SYSTEM
Cascade system. (Elec.)

Defn: A system or method of connecting and operating two induction motors so that the primary circuit of one is connected to the secondary circuit of the other, the primary circuit of the latter being connected to the source of supply; also, a system of electric traction in which motors so connected are employed. The cascade system is also called tandem, or concatenated, system; the connection a cascade, tandem, or concatenated, connection, or a concatenation; and the control of the motors so obtained a tandem, or concatenation, control. In the cascade system of traction the cascade connection is used for starting and for low speeds up to half speed. For full speed the short-circuited motor is cut loose from the other motor and is either left idle or (commonly) connected direct to the line.

CASCALHO
Cas*cal"ho, n. Etym: [Pg., a chip of stone, gravel.]

Defn: A deposit of pebbles, gravel, and ferruginous sand, in which the Brazilian diamond is usually found.

CASCARA BUCKTHORN
Cas"ca*ra buck"thorn`. (Bot.)

Defn: The buckthorn (Rhamnus Purshiana) of the Pacific coast of the
United States, which yields cascara sagrada.

CASCARA SAGRADA
Cas"ca*ra sa*gra"da. Etym: [Sp.]

Defn: Holy bark; the bark of the California buckthorn (Rhamnus
Purshianus), used as a mild cathartic or laxative.