from The Century Dictionary and Cyclopedia
- n. A hypothetical parent whose stature is taken to be a mean between the actual stature of a father and that of a mother. See the extract.
Sorry, no etymologies found.
In the graph below values for mid-parent height and mid-offspring height are plotted for a small sample population (mid-parent height is the average of the height of both parents).
Galton's celebrated law of ancestral inheritance, the qualities of any organism are determined to the extent of a certain fraction by its two parents taken together as a "mid-parent," that a smaller definite fraction is contributed by the grandparents taken together as a mid-grandparent, and so on to earlier generations.