Depth
Definition 1 of 5
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Spatial Dimension
Used to describe a measurable distance between two points, not the surface area. He checked the depth of the tire tread with a gauge.
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Not Thickness
Depth concerns inside distance; 'thickness' is the distance through an object from one surface to another. The depth of the cake is different from its thickness.
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Technical Contexts
Frequently used in technical fields like engineering, construction, and science. The architect discussed the depth of the foundation for stability.