Columbia Mental Maturity scale Co·lum·bi·a Mental Maturity scale (kə-lŭm'bē-ə)
n.
An individually administered test for assessing the intellectual ability of children ranging from 3 to 12 years old.
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| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |