1 a fine dispersion of one liquid in another, esp. as paint, medicine, etc.
2 a mixture of a silver compound suspended in gelatin etc. for coating plates or films.
Phrases and idioms:
emulsion paint a water-thinned paint containing a non-volatile substance, e.g. synthetic resin, as its binding medium.
Derivatives:
emulsionize v.tr. (also -ise). emulsive adj.
Etymology: F eacutemulsion or mod.L emulsio f. emulgere (as E-, mulgere muls- to milk)
Useful english dictionary. 2012.