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Definition of microgroove

microgroove

/ˈmaɪ.kroʊˌɡruːv/
mi · cro · groove
Plural:microgrooves
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microgroove Lexical Profile

microgroove Game Scores & Validity

• noun

1

A very fine, closely spaced groove on a vinyl phonograph record designed to be played at 33 1/3 or 45 revolutions per minute, allowing for much longer playing time than earlier 78 rpm records.

Example

"The introduction of the microgroove in 1948 revolutionized the music industry by enabling an entire symphony to fit onto a single twelve-inch disc."

2

A long-playing vinyl phonograph record manufactured with such fine grooves.

Example

"The collector carefully cleaned the vintage jazz microgroove before placing the stylus onto the turntable."

Synonyms
View all synonyms for microgroove

• Nearby Words

microfilm
microgram
microgreen
microgroove
microlender
microlending
microliter

Word Origin & Etymology

Coined in 1948 by Columbia Records from the prefix 'micro-' and 'groove' when introducing the 33 1/3 rpm long-playing (LP) vinyl record.

Cite this Entry

Wordmom. (2026). Definition of Microgroove. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/microgroove
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