[sap.o.na.ceous] adj [NL saponaceus, fr. L sapon-, sapo soap, of Gmc origin; akin to OE sape soap] (1710): resembling or having the qualities of soap -- sap.o.na.ceous.ness n
SAPONACEOUS
Meaning of SAPONACEOUS in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012