Hard soap
a soap made with olive oil, or some other suitable oil or fat, and sodium hydroxide; used as a detergent, and in the form of a suppository or soapsuds enema for constipation; used also as an excipient in pills.
Synonym: castile soap.
Dictionary > Hard soap
You will also like...
New Zealand’s Unique Geographical History
Explore why New Zealand has such unique flora and fauna, and learn why long periods of geographical isolation. This less..
New Zealand’s Unique Flora
If New Zealand has lots of unique animals, it's also got a whole lot of unique plants. Find out more about some of them,..
Still Water Animals
Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches a..
Inheritance and Probability
Gregor Mendel, an Austrian monk, is most famous in this field for his study of the phenotype of pea plants, including ..
Hormone Production
Hormones are chemical messengers produced by specialized glands and they were produced by switching on the genes designe..
Freshwater Communities & Plankton
Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..