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Definition of buffer

buffer

/ˈbʌf.ər/
buf · fer

Plural:buffers
•
Past Simple:buffered
•
Past Participle:buffered
•
Present Participle:buffering
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buffer Lexical Profile

buffer Game Scores & Validity

• noun

1

A temporary memory area used to store data while it is being moved from one place to another or waiting to be processed.

Example

"The video playback paused because it needed more time to load data into the buffer."


2

A person or thing that prevents incompatible or antagonistic people or things from coming into contact with or harming each other; a protective barrier or shock absorber.

Example

"The thick line of trees acts as a natural buffer against the harsh coastal winds."


3

A chemical solution that resists changes in pH when small quantities of an acid or an alkali are added to it.

Example

"The scientist added a buffer to the solution to keep its pH stable during the entire experiment."

Synonyms
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• verb

1

To store data temporarily in a computing memory area while it is being processed, transmitted, or downloaded.

Example

"If your internet connection is slow, the movie will constantly pause to buffer."


2

To lessen or moderate the impact of a blow, shock, or negative influence.

Example

"Having emergency savings will buffer you against unexpected financial hardships."


3

To treat a solution with a substance to prevent subsequent changes in its pH.

Example

"We need to buffer the blood samples immediately to maintain their structural integrity for testing."

Synonyms
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Antonyms
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• Rhymes for buffer

Word Origin & Etymology

Originates from the mid-19th century, derived from the verb 'buff' (to deaden the force of a blow or emit a dull sound), combined with the suffix '-er'. It initially referred to a shock-absorbing apparatus on railway vehicles.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Buffer. In Wordmom Dictionary. Retrieved Oct 16, 2026, from https://wordmom.com/dictionary/buffer
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