1
: of or relating to a parent : paternal, maternal
participation in the tests now under way is only upon parental request—
Monsanto Magazine
2
a
: appropriate to, characteristic of, or resembling a parent
maintained a nice balance between parental authority and parental affection the peculiar and indeed parental relationship of the author to his work—
Stanley Unwin
b
: of, relating to, or constituting a source or origin
the progenitor of the gold, however, was some parental magma—
A. M. Bateman
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Merriam-Webster unabridged
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