from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The theory that all heritable characteristics arise in the germ plasm and that acquired characteristics cannot be inherited.
from the GNU version of the Collaborative International Dictionary of English
- n. The theories and teachings in regard to heredity propounded by the German biologist August Weismann, esp. in regard to germ plasm as the basis of heredity and the impossibility of transmitting acquired characteristics; -- often called neo-Darwinism.
from The Century Dictionary and Cyclopedia
- n. The opinions and teachings of August Weismann, a noted German zoölogist and writer on speculative biology.
- n. In popular biological literature, the doctrine or opinion that acquired characters are not, and can not be, inherited. See doctrine of germ-plasm, substance of heredity, acquired character.
After August Friedrich Leopold Weismann.(American Heritage® Dictionary of the English Language, Fourth Edition)