Si-li´ci-um. A term applied to one of the earths.
Si´nus. [L., a bay.] A cavity, the interior of which is more expanded than the entrance.
Skel´e-ton. [Gr. σκελλω, skellō, to dry.] The aggregate of the hard parts of the body; the bones.
So´di-um. The metallic base of soda
Sphinc´ter. [Gr. σφιγγω, sphingo, to restrict.] A muscle that contracts or shuts an orifice.
Spi´nal Cord. A prolongation of the brain.
Spi-na´lis. Relating to the spine.
Spine. A thorn. The vertebral column; back-bone.
Spi´nous. Belonging to the spinal column.