[Zwolle] (25), a manufacturing town in the Dutch province of Oberyssel, 50 m. NE. of Amsterdam; close to it is Agnetenberg, famous as the seat of the monastery where Thomas à Kempis lived and died.

[Zyme], name of a germ presumed to be the cause of zymotic diseases.

[Zymotic Diseases], diseases of a contagious nature, presumed to be due to some virus or organism which acts in the system like a ferment.