American English

Definition of mental age noun from the Oxford Advanced American Dictionary

 

mental age

 noun
noun
 
[countable, usually singular]
 
jump to other results
the level of someone's ability to think, understand, etc. that is judged by comparison with the average ability for children of a particular age She is sixteen but has a mental age of five. compare chronological
See the Oxford Advanced Learner's Dictionary entry: mental age