Spinous process, a process or bony protuberance, resembling a spine or thorn, whence it derives its name.
Spool, a piece of cane or reed, or a hollow cylinder of wood, with a ridge at each end, used to wind yarn and thread upon.
Stamen, (plural stamens and stamina,) in weaving, the warp, the thread, any thing made of threads. In botany, that part of a flower, on which the artificial classification is founded, consisting of the filament or stalk, and the anther, which contains the pollen, or fructifying powder.
Stigma, (plural stigmas and stigmata,) the summit or top of the pistil of a flower.
Style, or Stile, the part of the pistil between the germ and the stigma.
Sub-carbonate, an imperfect carbonate.
Sulphates, Sulphats, Sulphites, salts formed by the combination of some base with sulphuric acid, as Sulphate of copper, (blue vitriol, or blue stone,) a combination of sulphuric acid with copper. Sulphate of iron, copperas, or green vitriol. Sulphate of lime, gypsum, or plaster of Paris. Sulphate of magnesia, Epsom salts. Sulphate of potash, a chemical salt, composed of sulphuric acid and potash. Sulphate of soda, Glauber's salts. Sulphate of zinc, white vitriol.
Sulphuret, a combination of an alkaline earth or metal with sulphur as, Sulphuret of iron, a combination of iron and sulphur.
Sulphuric acid, oil of vitriol, vitriolic acid.