Vocabulary : Sickness to Side-chain theory

Sickness : The quality or state of being sick or diseased; illness; sisease or malady. ;; Nausea; qualmishness; as, sickness of stomach.
Sicle : A shekel.
Sida : A genus of malvaceous plants common in the tropics. All the species are mucilaginous, and some have tough ligneous fibers which are used as a substitute for hemp and flax.
Siddow : Soft; pulpy.
Side : The margin, edge, verge, or border of a surface; especially (when the thing spoken of is somewhat oblong in shape), one of the longer edges as distinguished from the shorter edges, called ends; a bounding line of a geometrical figure; as, the side of a field, of a square or triangle, of a river, of a road, etc. ;; Any outer portion of a thing considered apart from, and yet in relation to, the rest; as, the upper side of a sphere; also, any part or position viewed as opposite to or contrasted with another; as, this or that side. ;; One of the halves of the body, of an animals or man, on either side of the mesial plane; or that which pertains to such a half; as, a side of beef; a side of sole leather. ;; The right or left part of the wall or trunk of the body; as, a pain in the side. ;; A slope or declivity, as of a hill, considered as opposed to another slope over the ridge. ;; The position of a person or party regarded as opposed to another person or party, whether as a rival or a foe; a body of advocates or

Side line : A line pert. or attached to the side of a thing. ;; Specif., a line for hobbling an animal by connecting the fore and the hind feet of the same side. ;; A line of goods sold in addition to one's principal articles of trade; a course of business pursued aside from one's regular occupation. ;; A secondary road; esp., a byroad at right angles to a main road.
Side slip : See Skid, below.
Sideboard : A piece of dining-room furniture having compartments and shelves for keeping or displaying articles of table service.
Sidebone : A morbid growth or deposit of bony matter and at the sides of the coronet and coffin bone of a horse.
Side-chain theory : A theory proposed by Ehrlich as a chemical explanation of immunity phenomena. In brief outline it is as follows: Animal cells and bacteria are complex aggregations of molecules, which are themselves complex. Complex molecules react with one another through certain of their side chains, but only when these side chains have a definite correspondence in structure (this account for the specific action of antitoxins).