1: An interpretation or aspect of a condition, a thing, or an issue: Janet asked her daughter, "Is this your idea of a new dimension of our dessert by adding cherries to the chocolate sauce on top the ice cream?”
2. The length, the depth, or the height of an object; usually, used in the plural form: First Jackie had to measure the dimensions of the living room before getting the right amount of paint at the store for redecorating it.