secretion

A mineral deposit formed in a fissure or cavity by growth inward from the walls: contrasted with concretion, which grows outward from a nucleus.

In physiology:

In animal physiology, the process of preparing and separating substances by glandular activity.

In vegetable physiology, the process by which substances are separated from the sap of vegetables.

A substance or product secreted, or elaborated and emitted.

Synonyms Excretion, Secretion. See excretion.

The act of secreting or concealing.

The act of secreting; the process by which material is separated from the blood through the agency of the cells of the various glands and elaborated by the cells into new substances so as to form the various secretions, as the saliva, bile, and other digestive fluids. The process varies in the different glands, and hence are formed the various secretions.

Any substance or fluid secreted, or elaborated and emitted, as the gastric juice.

Any substance that is secreted by an organism.