Emulsion (noun)

1. A mixture of two immiscible liquids, one of which is dispersed as droplets throughout the other.
2. A suspension of small droplets of one liquid in another, usually stabilized by an emulsifying agent.

Origin:

From latin 'emulsus' (mixed), from 'emulgere' (to milk out).

Examples:

1. An emulsion of oil and water can be made with the help of an emulsifying agent like egg yolks or mustard.
2. Mayonnaise is a classic example of a food emulsion made from oil, vinegar, and egg yolks.
3. The emulsion of cream in my coffee was ruined when I added too much sugar.
4. The emulsion in the photographic film must remain stable to produce clear images.
5. The process of making butter involves creating an emulsion of milk fat and water.