Definition of microgroove in English:

microgroove

noun

  • A very narrow groove on a long-playing record.

    • ‘With Jan Peerce and Leonard Warren, she recorded an excellent Rigoletto for RCA Victor in 1950 - the first operatic recording to be released on microgroove, unless I am mistaken.’

Pronunciation:

microgroove

/ˈmʌɪkrə(ʊ)ɡruːv/