Definition of mental age noun from the Oxford Advanced Learner's Dictionary


mental age

BrE BrE//ˌmentl ˈeɪdʒ//
; NAmE NAmE//ˌmentl ˈeɪdʒ//
[countable, usually singular]
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the level of somebody’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 American Dictionary entry: mental age