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n. ~ 1. A substance that can neutralize acids; an alkali. - 2. A means or mechanism that can transform an irregular flow to a regular rate, especially in data transmission. - 3. A means or mechanism for reducing shock or impact. - 4. A technique in geographic information systems that can indicate a region around a data point to show a an area of influence or interaction.


A buffer1 made from calcium carbonate or magnesium carbonate is often added to paper to compensate for residual manufacturing acids or from acidic environmental contaminants.