a.1.(Biol.) Pertaining to, or involving, homodynamy; as, successive or homodynamous parts in plants and animals.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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Perhaps without knowing it, by showing Rassendyll as being descended from "mixed blood," Hope was giving character to an argument made by August Weismann: that in all biological organisms there may be a "greater number" of what Weismann termed homodynamous determinants--the genetic building materials "which have the special function of impressing a like character on any part of the body"--in "one line of ancestors than in the other," a hypothesis Weismann claims as true because it "has already been shown to be the case in hybrids" (1893a, 278; emphasis in original).