vacuole

A membrane-bound organelle in the cytoplasm of most cells, especially plant cells, containing water and dissolved substances such as salts, sugars, enzymes, and amino acids.

A small extracellular cavity or space within tissues.

A minute cell or cavity in the tissue of organisms.

In anatomy, a minute space, vacuity, or interstice of tissue in which lymphatic vessels are supposed to originate.

In zoology, any minute vesicle or vacuity in the tissue of a protozoan, as an amœba.

In botany, a cavity of greater or less size within the protoplasmic mass of active vegetable cells, which is filled with water, or cell-sap as it is called.

A small air cell, or globular space, in the interior of organic cells, either containing air, or a pellucid watery liquid, or some special chemical secretions of the cell protoplasm.

See under Contractile, and see Illusts. of Infusoria, and Lobosa.

See under Food, and see Illust. of Infusoria.

A large membrane-bound vesicle in a cell‘s cytoplasm.