C2 adjective /ˌsæpəˈneɪʃəs/
saponaceous
含肥皂性质的
Meaning
Soapy or having the qualities of soap.
Example
The plant has saponaceous leaves that produce foam when rubbed in water.
这种植物有含肥皂性质的叶子,擦在水中时会产生泡沫。