microgrooven.

Brit.

/ˈmʌɪkrə(ʊ)ɡruːv/, U.S.

/ˈmaɪkroʊˌɡruv/,

/ˈmaɪkrəˌɡruv/

Origin: Formed within English, by compounding. Etymons: micro- comb. form, groove n.

Etymology: < micro- comb. form + groove n. (see quot. 1949). Compare French microsillon in same sense (1951).

A very narrow groove on a gramophone record, permitting longer playing times than the wider groove formerly employed; a record having such grooves, or the medium itself. Now also more generally: any very fine groove on a piece of equipment, machinery, etc., esp. as designed to enhance performance. Frequently attributive.

ΘΚΠ

society > communication > record > recording or reproducing sound or visual material > sound recording and reproduction > a sound recording > [noun] > record or disc > groove

groove1902

track1904

fine-groove1948

microgroove1948

locked groove1956

coarse groove1958

run-in1962

1948 Syracuse (N.Y.) Herald-Jrnl. 26 June 32/4 (advt.) It's a non-breakable ‘microgroove’ record which plays 45 minutes on one 12-inch, double-faced disc.

1948 Amer. Speech 23 252 CBS announces a new-type record—microgroove.

1948 Electronic Engin. 20 333/3 The groove size, from which the name ‘Microgroove’ has been derived, is only 0·0027 in. to 0·003 in.

1949 Wireless World Apr. 146/1 What is a ‘microgroove’ record? It is a name given to the 7-, 10- or 12-in pressings in high~grade vinylite, with a rotational speed of 33¹/ ₃ r.p.m... As it was found necessary to reduce the groove width to about one-third the size of normal record grooves, the name ‘Microgroove’ was coined originally by Columbia Records, Inc., for their 33¹/ ₃ r.p.m. records, but it would now appear to be used in America as a generic term for all such fine-pitch records.

1951 E. Sackville-West & D. Shawe-Taylor Rec. Guide 717 Even a 7-inch 33⅓ microgroove would apparently be too long—or too expensive—to meet this case.

1957 Times 13 Dec. 18/2 The 78 r.p.m. record began to lose favour. On the other hand, the demand for microgroove records continued strongly and sales of both 45 r.p.m. and 33⅓ r.p.m. records increased.

1987 New Musical Express 14 Feb. 21/1 From cylinders, to 78s, to microgroove, to stereo, to Dolby, he likens the process to a gradual pulling away of the covers.

1995 Kay & Co. (Worcester) Catal. Autumn–Winter 964/2 Philishave rechargeable/mains HS890 [shaver]. Microgroove shaving heads with lift and cut.

1998 Automotive Engineer June 57/2 The quiet and vibration-free engine is a direct result of several new features, namely micro-grooves in the bearings..and vertical mounts.

This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).

单词	microgroove
释义	microgrooven. Brit. /ˈmʌɪkrə(ʊ)ɡruːv/, U.S. /ˈmaɪkroʊˌɡruv/, /ˈmaɪkrəˌɡruv/ Origin: Formed within English, by compounding. Etymons: micro- comb. form, groove n. Etymology: < micro- comb. form + groove n. (see quot. 1949). Compare French microsillon in same sense (1951). A very narrow groove on a gramophone record, permitting longer playing times than the wider groove formerly employed; a record having such grooves, or the medium itself. Now also more generally: any very fine groove on a piece of equipment, machinery, etc., esp. as designed to enhance performance. Frequently attributive. ΘΚΠ society > communication > record > recording or reproducing sound or visual material > sound recording and reproduction > a sound recording > [noun] > record or disc > groove groove1902 track1904 fine-groove1948 microgroove1948 locked groove1956 coarse groove1958 run-in1962 1948 Syracuse (N.Y.) Herald-Jrnl. 26 June 32/4 (advt.) It's a non-breakable ‘microgroove’ record which plays 45 minutes on one 12-inch, double-faced disc. 1948 Amer. Speech 23 252 CBS announces a new-type record—microgroove. 1948 Electronic Engin. 20 333/3 The groove size, from which the name ‘Microgroove’ has been derived, is only 0·0027 in. to 0·003 in. 1949 Wireless World Apr. 146/1 What is a ‘microgroove’ record? It is a name given to the 7-, 10- or 12-in pressings in high~grade vinylite, with a rotational speed of 33¹/ ₃ r.p.m... As it was found necessary to reduce the groove width to about one-third the size of normal record grooves, the name ‘Microgroove’ was coined originally by Columbia Records, Inc., for their 33¹/ ₃ r.p.m. records, but it would now appear to be used in America as a generic term for all such fine-pitch records. 1951 E. Sackville-West & D. Shawe-Taylor Rec. Guide 717 Even a 7-inch 33⅓ microgroove would apparently be too long—or too expensive—to meet this case. 1957 Times 13 Dec. 18/2 The 78 r.p.m. record began to lose favour. On the other hand, the demand for microgroove records continued strongly and sales of both 45 r.p.m. and 33⅓ r.p.m. records increased. 1987 New Musical Express 14 Feb. 21/1 From cylinders, to 78s, to microgroove, to stereo, to Dolby, he likens the process to a gradual pulling away of the covers. 1995 Kay & Co. (Worcester) Catal. Autumn–Winter 964/2 Philishave rechargeable/mains HS890 [shaver]. Microgroove shaving heads with lift and cut. 1998 Automotive Engineer June 57/2 The quiet and vibration-free engine is a direct result of several new features, namely micro-grooves in the bearings..and vertical mounts. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). < n.1948
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