SPHERICAL; SPHERIC a.
ieves, and treachers by spherical predominance. Shak. Though the stars were suns, and overburned Their spheric limitations. Mrs. Browning. Spherical angle, Spherical coördinate, Spherical excess, etc. See under Angle, Coordinate, etc. -- Spherical geometry, that branch of geometry which treats of spherical magnitudes;…
TUNNEL n.
ting furnace where the materials are put in. -- Tunnel kiln, a limekiln in which coal is burned, as distinguished from a flame kiln, in which wood or peat is used. -- Tunnel net, a net with a wide mouth at one end and narrow at the other. -- Tunnel pit, Tunnel shaft, a pit or shaft sunk from the top of the ground to…
ZINC n.
Zinc oxide (Chem.), the oxide of zinc, ZnO, forming a light fluffy sublimate when zinc is burned; -- called also flowers of zinc, philosopher's wool, nihil album, etc. The impure oxide produced by burning the metal, roasting its ores, or in melting brass, is called also pompholyx, and tutty. -- Zinc spinel (Min.), a m…