Definition: Rectified Spirit
Rectified spirit is a liquid with a high concentration of alcohol, formed by multiple distillation. It is generally used for medicinal or household purposes, or very occasionally in mixed drinks. It usually has a concentration of alcohol above 75%.
Definition: Levigated
Levigated has various meanings relating to being made smooth, but in the context of medicines or herbs it generally means to grind into a smooth paste while moist.
Definition: Vesication
Vesication means the formation of vesicles, otherwise known as blisters. It is more usually spelled vesiculation in modern works.
Definition: Demulcent
An ingredient or mixture that is said to be demulcent is one which forms a film over a mucous membrane, usually to soothe it or to relieve irritation. Such ingredients or mixtures are often found in cough syrups, for instance.