NCIt definition : A semi-solid composed of at least two immiscible liquids, one of which is dispersed
as droplets within the other liquid, and stabilized with one or more emulsifying agents.;
Alternative definition : CDISC: A dosage form consisting of a two-phase system comprised of at least two immiscible
liquids (1), one of which is dispersed as droplets (internal or dispersed phase) within
the other liquid (external or continuous phase), generally stabilized with one or
more emulsifying agents. Note 1: A liquid is pourable; it flows and conforms to its
container at room temperature. It displays Newtonian or pseudoplastic flow behavior.
Note 2: Emulsion is used as a dosage form term unless a more specific term is applicable,
e.g. cream, lotion, ointment. (NCI);