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scumming
scum S0177700 (skŭm)n.1. A filmy or frothy layer of matter that forms on the surface of a liquid or body of water or on a hard surface.2. The refuse or dross of molten metals.3. Refuse or worthless matter.4. Slang One, such as a person or an element of society, that is regarded as despicable or worthless.v. scummed, scum·ming, scums v.tr. To remove the scum from.v.intr. To become covered with scum.
[Middle English, from Middle Dutch schūm; see (s)keu- in Indo-European roots.]
scum′mer n.scum′mi·ly adv.scum′mi·ness n.scum′my adj.IdiomsSeescumscumming
scumming[′skəm·iŋ] (graphic arts) Ink adhering to the nonimage area of a printing plate, resulting in tinting of the nonimage area of the printed substrate. scum, scumming1. A surface deposit sometimes formed on clay bricks; caused either by soluble salts in the clay which migrate to the surface as moisture escapes during drying (drier scum) or by the formation of deposits during kiln firing (kiln scum). 2. A mass of organic matter which floats on the surface of sewage.Scumming
ScummingA situation in which a part of a printing plate not intended for ink takes on ink anyway. The ink is transferred to paper by accident. Printers seek to avoid scumming. |