- any substance or mixture of compounds that, added to a solution, is capable of neutralizing both acids and bases without appreciably changing the original acidity or alkalinity of the solution.
- Also called buff·er so·lu·tion. a solution containing such a substance.
OTHER WORDS FROM bufferun·buff·ered, adjective
Other definitions for buffer (2 of 3)
Other definitions for buffer (3 of 3)
Origin of buffer3
How to use buffer in a sentence
The option to ignore it is vanishing, even for parents with “good” insurance that buffers from the up-front costs.Is the Doctor-Patient Relationship Turning Into a Business Partnership?|Russell Saunders|April 11, 2014|DAILY BEAST
NPY works as a natural tranquilizer that controls anxiety and buffers the effects of stress hormones like norepinephrine.
What a pair of old buffers we are coming to be, you and I. Nearly fifty years since we were apprentices together on the Clontarf.Wandering Ghosts|F. Marion Crawford
If I do these things just after Jackson has passed I catch it nastily, just about the rear buffers.
He should have provided himself with cross-trees, or guttapercha buffers, ever so small, just to take his bearing.
"Very soon you go," he cried out to the bulkheads, or buffers, or whatever are the things that close the career of a land-engine.Erema|R. D. Blackmore
He can distinguish the throbbing of the propeller from the thumping of the buffers on the railway carriage.August Strindberg, the Spirit of Revolt|L. (Lizzy) Lind-af-Hageby
British Dictionary definitions for buffer (1 of 3)
- an ionic compound, usually a salt of a weak acid or base, added to a solution to resist changes in its acidity or alkalinity and thus stabilize its pH
- Also called: buffer solution a solution containing such a compound