adj. Not hereditary; not passed down by inheritance.
the GNU version of the Collaborative International Dictionary of English
adj. Not inheritable through genetic transmission. Opposite of inheritable, and heritable.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. not acquirable by inheritance
Word Usage
"It would be reasonable to expect that the proportion of nonhereditary MPs would rise with age—exactly the result that Mr. French's number-crunching yields."