from The Century Dictionary and Cyclopedia

  • n. In teratology, the duplication of parts normally single, or the production of a double monster.
  • n. In biology, the process by which a change in the environment which produces a change in an organism produces a similar change in the germ-cells that are contained in its body, so that descendants in later generations are born with an inherited adaptation for meeting and responding to this specific change in the environment.


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