|psychol Compare mental age the age at which a child should be able to perform a standardized test successfully|
|a stew of meat, vegetables, potatoes, etc.|
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
achievement age a·chieve·ment age (ə-chēv'mənt)
The level of an individual's educational accomplishment as measured by standard achievement tests and expressed as the age in years of a child for whom the total score would be an average score.