Surface-mail
noun
1.
the system, especially a government postal system, of sending mail by truck, train, or boat, as opposed to airmail.
2.
mail sent by this system.
surface mail
noun
1.
mail transported by land or sea Compare airmail
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- Surface-of-light-and-shade
noun 1. (in architectural shades and shadows) a surface in a plane tangent to the parallel rays from the theoretical light source, treated as a shade surface.
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noun 1. the surface upon which an image or a set of points is projected.
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noun, Mathematics. 1. a surface formed by revolving a plane curve about a given line.
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noun 1. Machinery. a flat plate used by machinists for testing surfaces that are to be made perfectly flat. surface plate noun 1. another name for faceplate (sense 2)