The dimension of the family room on the floorplan is. 4 inches by 4.8 inches.
: the length, width, or height of something. dimension. noun.
Examples: width, depth, and height are dimensions. A line has one dimension (1D), a square has two dimensions (2D), and a cube has three dimensions (3D).
Three dimensions
In everyday life, we inhabit a space of three dimensions – a vast 'cupboard' with height, width, and depth, well known for centuries. Less obviously, we can consider time as an additional, fourth dimension, as Einstein famously revealed.
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