n 1 a  :  a system (as fat in milk) consisting of a liquid dispersed with or without an emulsifier in an immiscible liquid usu. in droplets of larger than colloidal size  b  :  the state of such a system  2  :  SUSPENSION 2 : esp  :  a suspension of a sensitive silver salt or a mixture of halides of silver in a viscous medium (as a gelatin solution) forming a coating on photographic plates, film, or paper emul*sive adj 
 
 
 
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