Saponaria sa·po·na·ria uncommon noun 1. mostly perennial Old World herbs Synonymsgenus Saponaria Related words Word family Saponaria officinalisSaponaria vaccaria Broader terms caryophylloid dicot genus Parts Caryophyllaceae Part of soapwort WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.