emulsion Hear it!

emulsion definition

emul·sion (ē muls̸hən, i-)

noun

a stable colloidal suspension, as milk, consisting of an immiscible liquid dispersed and held in another liquid by substances called emulsifiers; specif.,
  1. Pharmacy such a suspension used as a vehicle for medication
  2. Photog. a suspension of a salt of silver, platinum, etc. in gelatin or collodion, used to coat plates, film, and paper

Etymology: ModL emulsio < L emulsus, pp. of emulgere, to milk or drain out < e-, out + mulgere, to milk

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