micromillimetremicromillimetern.

Brit.

/ˈmʌɪkrə(ʊ)ˌmɪlᵻmiːtə/, U.S.

/ˈˌmaɪkroʊˈˌmɪləˌmidər/

Forms: 1800s– micromillimeter (chiefly U.S.), 1800s– micromillimetre.

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

Etymology: < micro- comb. form + millimetre n. In sense 1 after Dutch mikromillimeter (P. Harting Mikroskoop (1848) ii. 294); compare German Mikromillimeter (1866 or earlier). With sense 2 compare French micromillimètre (dated 1890 in Robert Dict. alphabétique et analogique (1986)).Sense 1 is the only instance in which micro- comb. form is found prefixed to the name of a unit of measurement to denote a factor of one thousandth, rather than one millionth.

1. Chiefly Histology. One thousandth of a millimetre, a micron or micrometre. Now rare.

ΚΠ

1852 Monthly Jrnl. Med. Sci. May 456 In his remarks on the subject, Harting proposes the use of a standard scale in which ¹/ ₁₀₀₀th of a millimetre, or one micromillimetre, is regarded as unity.

1876 Philos. Trans. 1875 (Royal Soc.) 165 221 The colonies enlarge and reach even the size of ten micromillimetres.

1878 Jrnl. Royal Microsc. Soc. 1 355 A quarter of a century ago..Harting proposed..micro-millimetre... Thus we had m. for the metre, mm. for the millimetre, and mmm. for the micromillimetre.

1880 Jrnl. Royal Microsc. Soc. 3 327 The same reasoning..leads us, however, to recommend the adoption of ‘micrometre’ instead of ‘micromillimetre’.

1881 A. Flint Treat. Princ. Med. (ed. 5) 62 Whose size is between two and six micromillimetres.

1887 tr. K. W. Naegeli & S. Schwendener Microscope 293 Harting's proposal to use the micromillimetre (= ·001 mm.) as the standard of unity deserves general acceptance.

1934 Bot. Gaz. 95 478 The entire tripartite structure measuring 3.1 micromillimeters in length.

1947 Brittonia 6 29 Very minute dimensions should be reckoned in μ (micromillimetres, microns, or thousandths of a millimetre).

1977 Lancet 17 Sept. 588/2 The vas-deferens lumen was measured under the operating-microscope with a micromillimetre rule.

2. One millionth of a millimetre, a nanometre. Now rare.

ΚΠ

1887 Philos. Trans. 1886 (Royal Soc.) 177 684 The tension of the film..is sensibly constant when the thickness exceeds 50 micro-millimetres.

1890 Proc. Royal Soc. 1889–90 47 366 The thickness of oil required to take the life out of the camphor movements lies between one and two millionths of a millimetre, and may be estimated with some precision at 1·6 micro~millimetre.

1904 C. Hering Ready Reference Tables I. 31 1 milli-micron (spectroscopy) or micro-millimeter (microscopy) = 10 Angstroem units.

1931 Proc. Royal Soc. A. 133 106 A distance which is a function of the ionic concentration, and which lies as a rule between molecular dimensions and some thousand micromillimetres.

3. In general use: an extremely tiny distance.

ΘΚΠ

the world > space > distance > [noun] > a short distance > a very short distance

footmealOE

hair-brede14..

hairbreadth1561

hair's breadth1584

micromillimetre1987

1987 T. Wolfe Bonfire of Vanities xxvi. 516 The old arteries were clogging up micromillimeter by micromillimeter, day by day, month by month.

1993 D. Carey Great Starship Race xxii. 290 Spock and Sulu were pulling the phaser tighter and tighter, even narrower than a fishing line. Micromillimeters.

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

单词	micromillimetre
释义	micromillimetremicromillimetern. Brit. /ˈmʌɪkrə(ʊ)ˌmɪlᵻmiːtə/, U.S. /ˈˌmaɪkroʊˈˌmɪləˌmidər/ Forms: 1800s– micromillimeter (chiefly U.S.), 1800s– micromillimetre. Origin: Formed within English, by compounding. Etymons: micro- comb. form, millimetre n. Etymology: < micro- comb. form + millimetre n. In sense 1 after Dutch mikromillimeter (P. Harting Mikroskoop (1848) ii. 294); compare German Mikromillimeter (1866 or earlier). With sense 2 compare French micromillimètre (dated 1890 in Robert Dict. alphabétique et analogique (1986)).Sense 1 is the only instance in which micro- comb. form is found prefixed to the name of a unit of measurement to denote a factor of one thousandth, rather than one millionth. 1. Chiefly Histology. One thousandth of a millimetre, a micron or micrometre. Now rare. ΚΠ 1852 Monthly Jrnl. Med. Sci. May 456 In his remarks on the subject, Harting proposes the use of a standard scale in which ¹/ ₁₀₀₀th of a millimetre, or one micromillimetre, is regarded as unity. 1876 Philos. Trans. 1875 (Royal Soc.) 165 221 The colonies enlarge and reach even the size of ten micromillimetres. 1878 Jrnl. Royal Microsc. Soc. 1 355 A quarter of a century ago..Harting proposed..micro-millimetre... Thus we had m. for the metre, mm. for the millimetre, and mmm. for the micromillimetre. 1880 Jrnl. Royal Microsc. Soc. 3 327 The same reasoning..leads us, however, to recommend the adoption of ‘micrometre’ instead of ‘micromillimetre’. 1881 A. Flint Treat. Princ. Med. (ed. 5) 62 Whose size is between two and six micromillimetres. 1887 tr. K. W. Naegeli & S. Schwendener Microscope 293 Harting's proposal to use the micromillimetre (= ·001 mm.) as the standard of unity deserves general acceptance. 1934 Bot. Gaz. 95 478 The entire tripartite structure measuring 3.1 micromillimeters in length. 1947 Brittonia 6 29 Very minute dimensions should be reckoned in μ (micromillimetres, microns, or thousandths of a millimetre). 1977 Lancet 17 Sept. 588/2 The vas-deferens lumen was measured under the operating-microscope with a micromillimetre rule. 2. One millionth of a millimetre, a nanometre. Now rare. ΚΠ 1887 Philos. Trans. 1886 (Royal Soc.) 177 684 The tension of the film..is sensibly constant when the thickness exceeds 50 micro-millimetres. 1890 Proc. Royal Soc. 1889–90 47 366 The thickness of oil required to take the life out of the camphor movements lies between one and two millionths of a millimetre, and may be estimated with some precision at 1·6 micro~millimetre. 1904 C. Hering Ready Reference Tables I. 31 1 milli-micron (spectroscopy) or micro-millimeter (microscopy) = 10 Angstroem units. 1931 Proc. Royal Soc. A. 133 106 A distance which is a function of the ionic concentration, and which lies as a rule between molecular dimensions and some thousand micromillimetres. 3. In general use: an extremely tiny distance. ΘΚΠ the world > space > distance > [noun] > a short distance > a very short distance footmealOE hair-brede14.. hairbreadth1561 hair's breadth1584 micromillimetre1987 1987 T. Wolfe Bonfire of Vanities xxvi. 516 The old arteries were clogging up micromillimeter by micromillimeter, day by day, month by month. 1993 D. Carey Great Starship Race xxii. 290 Spock and Sulu were pulling the phaser tighter and tighter, even narrower than a fishing line. Micromillimeters. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). < n.1852
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