FLOUR n.
The finely ground meal of wheat, or of any other grain; especially, the finer part of meal separated by bolting; hence, the fine and soft powder of any substance; as, flour of emery; flour of mustard. Flour bolt, in milling, a gauze-covered, revolving, cylindrical frame or reel, for sifting the flour from the refuse co…
FLUORINE n.
, is very active chemically, and possesses such an avidity for most elements, and silicon especially, that it can neither be prepared nor kept in glass vessels. If set free it immediately attacks the containing material, so that it was not isolated until 1886. It is a pungent, corrosive, colorless gas. Symbol F. Atomic…
FOLIAGE n.
A cluster of leaves, flowers, and branches; especially, the representation of leaves, flowers, and branches, in architecture, intended to ornament and enrich capitals, friezes, pediments, etc. Foliage plant (Bot.), any plant cultivated for the beauty of its leaves, as many kinds of Begonia and Coleus.…