buffer. ( ˈbʌfə) n. 1. (Railways) one of a pair of spring-loaded steel pads attached at both ends of railway vehicles and at the end of a railway track to reduce shock due to contact. 2. a person or thing that lessens shock or protects from damaging impact, circumstances, etc. 3. (Chemistry) chem.
buffer [ bŭf ′ər ] Chemistry A substance that prevents change in the acidity of a solution when an acid or base is added to the solution or when the solution is diluted. Buffers are used to make solutions of known pH, especially for instrument calibration purposes.
A buffer is an aqueous solution used to keep the pH of a solution nearly constant. A buffer consists of a weak acid and its conjugate base or a weak base and its conjugate acid. Buffer capacity is the amount of acid or base that can be added before the pH of a buffer changes.
noun. 1 A person or thing that reduces a shock or that forms a barrier between incompatible or antagonistic people or things. ‘family and friends can provide a buffer against stress’. More example sentences. ‘I believe that historical forces push us into conflict and without the law as a buffer between people, we would have a world of.
buffers: Chemical substances in the blood, such as lactic acid or bicarbonate, which act to limit changes in the composition, especially the acidity, by binding hydrogen ions. Buffers are important in maintaining constancy when acids are added or removed.
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