Viscus n. (pl. viscera) (Anat.) One of the organs, as the brain, heart, or stomach, in the great cavities of the body of an animal; especially used in the plural, and applied to the organs contained in the abdomen.
... noticing one or two with which he is familiar. Take first, the relation between the activity of an organ and its growth. This is a universal relation. It holds, not only of a bone, a muscle, a nerve, an organ of sense, a mental faculty; but of every gland, every viscus, every element of the body. It is seen, not in man only, but in each animal which affords us adequate opportunity of tracing it. Always providing that the performance of function is not so excessive ... — Essays: Scientific, Political, & Speculative, Vol. I • Herbert Spencer Read full book for free!