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emulsion
[ih-muhl-shuhn]
noun
Physical Chemistry.any colloidal suspension of a liquid in another liquid.
such a suspension used in cosmetics.
Pharmacology.a liquid preparation consisting of two completely immiscible liquids, one of which, as minute globules coated by a gum or other mucilaginous substance, is dispersed throughout the other: used as a means of making a medicine palatable.
Photography.a composition sensitive to some or all of the actinic rays of light, consisting of one or more of the silver halides suspended in gelatin, applied in a thin layer to one surface of a film or the like.
emulsion
/ ɪˈʌʃə /
noun
photog a light-sensitive coating on a base, such as paper or film, consisting of fine grains of silver bromide suspended in gelatine
chem a colloid in which both phases are liquids
an oil-in-water emulsion
Also called: emulsion paint.a type of paint in which the pigment is suspended in a vehicle, usually a synthetic resin, that is dispersed in water as an emulsion. It usually gives a mat finish
pharmacol a mixture in which an oily medicine is dispersed in another liquid
any liquid resembling milk
Other Word Forms
- emulsive adjective
- ˈܱ adjective
Word History and Origins
Word History and Origins
Origin of emulsion1
Example Sentences
These glass plates recorded images of the night sky using a light-sensitive emulsion covering their surface.
His skill was perhaps most evident in his mastery of magical moles and his more inventive creations, like fried cochinita pibil head cheese with habanero ash emulsion, avocado mousse, and kumquat sauce.
Personal skincare products, ranging from beauty cosmetics to medical creams, rely on sophisticated "chassis" formulations -- often emulsions or gels -- to effectively deliver active ingredients.
The experimental emulsion may have worked better than the commercial emulsion because it was absorbed into the animals' bloodstream two times faster.
Because organic fertilizers like fish emulsion have very low concentrations of nitrogen and other elements, he recommends a monthly application of a water-soluble food labeled with a 20-20-20 NPK ratio instead.
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When To Use
An emulsion is a mixture of two liquids that don’t fully combine. An emulsion may look like a single liquid, but it’s made up of particles of one liquid distributed throughout another liquid.For example, if you whisk together oil and water, it forms an emulsion in which small droplets of oil are suspended in the water, but the two liquids aren’t fully blended together (as they would be if you stirred together water and vinegar, for example).In technical chemistry terms, an emulsion is a colloidal suspension in which the substances mixed together are both liquids. Both colloids and suspensions involve particles of one substance distributed in another without being dissolved.The word emulsion is used in a variety of contexts, including pharmacology, cooking, and photography.In cooking, emulsions are made by blending two liquids or liquid-like ingredients into a smooth consistency. Salad dressings called vinaigrettes are typically emulsions of oil and vinegar.The word emulsion is used in a more specific way in photography to refer to a light-sensitive coating (consisting of a chemical suspended in gelatine) that’s applied to paper or film.The verb emulsify means to form an emulsion.Example: To properly make an emulsion of oil and vinegar, you have to whisk very hard to separate the oil into tiny droplets, or else the two liquids will separate.
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