The Hide command turns off the visibility of the selected object(s).

To turn the visibility back on for an object in the Mesh workspace, find the object in the object selector and select its check box, or right-click the object in the object selector and select Show, or use the appropriate Show Object command available in the shortcut menu that appears when right-clicking the viewer background.

To turn the visibility back on for an object in the Geometry workspace, find the object in the object selector and select its check box, or right-click the object in the object selector and select Show.