Vocabulary : Silicofluoric to Siling
Silicofluoric : Containing, or composed of, silicon and fluorine; especially, denoting the compounds called silicofluorides.Silicofluoride : A fluosilicate; a salt of silicofluoric acid.
Silicoidea : An extensive order of Porifera, which includes those that have the skeleton composed mainly of siliceous fibers or spicules.
Silicon : A nonmetalic element analogous to carbon. It always occurs combined in nature, and is artificially obtained in the free state, usually as a dark brown amorphous powder, or as a dark crystalline substance with a meetallic luster. Its oxide is silica, or common quartz, and in this form, or as silicates, it is, next to oxygen, the most abundant element of the earth's crust. Silicon is characteristically the element of the mineral kingdom, as carbon is of the organic world. Symbol Si. Atomic weight 28. Called also silicium.
Silicotungstic : Of, pertaining to, or designating, any one of a series of double acids of silicon and tungsten, known in the free state, and also in their salts (called silicotungstates).
