Etymology: Latin; 'nullius filius' literally "nobody's son".
- (context, Latinate) A child of unknown parentage; an orphan.
- : The son of no one; a bastard. A bastard is considered nullius filius as far as regards his right inherit. But the rule of nullius filius does not apply in other respects. - Bouvier Law Dictionary 6th edition, 1856.
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