The American Heritage® Dictionary of the English Language, 4th Edition
n. The entirety of specialized protoplasm, other than germ plasm, constituting the body.
n. The protoplasm of a somatic cell.
The Century Dictionary and Cyclopedia
n. Somatic plasma; the substance of the body.
Word Usage
"According to Weismann the somatoplasm developed and was influenced by the environment, whereas the germplasm was segregated early in development and was not susceptible to environmental influences."