Webster's Revised Unabridged Dictionary · 1913

Emulsin

Emulsin , noun

[See Emulsion, Emulge.]

(a)
(Chemistry) The white milky pulp or extract of bitter almonds.
(b)
(Chemistry) An unorganized ferment (contained in this extract and in other vegetable juices), which effects the decomposition of certain glucosides. [Rare]