BENZENE n.
em.), a closed chain or ring, consisting of six carbon atoms, each with one hydrogen atom attached, regarded as the type from which the aromatic compounds are derived. This ring formula is provisionally accepted as representing the probable constitution of the benzene molecule, C6H6, and as the type on which its deriva…
BLEACH v.
the color, or stains, from; to blanch; to whiten. The destruction of the coloring matters attached to the bodies to be bleached is effected either by the action of the air and light, of chlorine, or of sulphurous acid. Ure. Immortal liberty, whose look sublime Hath bleached the tyrant's cheek in every varying clime. Sm…
BLOCK n.
ased in a frame or shell which is provided with a hook, eye, or strap, by which it may be attached to an object. It is used to change the direction of motion, as in raising a heavy object that can not be conveniently reached, and also, when two or more such sheaves are compounded, to change the rate of motion, or to ex…
BOLAS n.
f missile weapon consisting of one, two, or more balls of stone, iron, or other material, attached to the ends of a leather cord; -- used by the Gauchos of South America, and others, for hurling at and entangling an animal.