| horizontal mobility | |
| —n | |
| sociol Compare vertical mobility upward mobility See also downward mobility the movement of groups or individuals to positions that differ from those previously held but do not involve any change in class, status, or power | |
| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |