base unitn.

Brit.

/ˈbeɪs ˌjuːnɪt/, U.S.

/ˈbeɪs ˌjunət/

Origin: Formed within English, by compounding. Etymons: base n.¹, unit n. and adj.

Etymology: < base n.¹ + unit n. and adj.

1. A unit forming the basis of a system of measurement, combination, etc.; (Science) each of the fundamental units in a system of measurement which are defined in terms of a physical object, property, or phenomenon, rather than by the combination of other units.The base units of the SI are the metre, kilogram, second, ampere, kelvin, mole, and candela.

ΘΚΠ

the world > relative properties > measurement > [noun] > that by which one measures > unit of measurement

measurec1384

modulea1628

standard1646

unit1681

base unit1867

1867 Q. Jrnl. Pure & Appl. Math. 8 53 I have been obliged to use as the base unit (1 + x)⁰ corresponding to (1 + x)^m, or (a + x)⁰ corresponding to (a + x)^m, in order to bring the processes within an available compass.

1871 C. Davies Metric Syst. ii. 41 The metre is too large for a base-unit.

1921 W. Krampner & W. E. Grady Arithm. by Grades 59 Units of measures that are larger than the base units are called by names with Greek prefixes.

1972 Physics Bull. Jan. 10/1 Amongst the main decisions taken by the conference were the final adoption of the ‘mole’ (mol) as an SI base unit.

1990 Appl. Linguistics 11 188 Clinical linguistics..also makes use of the utterance as a base unit.

2008 Age (Melbourne) (Nexis) 18 Feb. (Education section) 13 The base unit ‘are’ was part of the old metric system and not part of the modern SI.

2. A part, component, device, or unit which forms or acts as a base (in various senses).

ΚΠ

1919 H. P. Manly Automobile Ignition vii. 244 The coil housing is attached to the base unit by means of four screws.

1929 Pop. Sci. Monthly May 92/1 Body or base unit. Turn the four legs carefully to the design indicated.

1972 U.S. Patent 3,644,681 9/2 The base unit and the portable unit each contain a radio transmitter and receiver.

1980 Washington Post (Nexis) 9 Mar. l11 The blenders consist of a base unit which houses a motor and a container with a set of small, madly whirling blades at the bottom.

1994 BBC Good Food Feb. 70/2 The sit-on sink, which rests on top of a base unit.

2004 Retro Gamer No. 10. 27/1 The current going price for IIGS machines is between $25 for a base unit, and up to $99 for a complete machine with monitor.

This is a new entry (OED Third Edition, September 2011; most recently modified version published online December 2021).

单词	base unit
释义	base unitn. Brit. /ˈbeɪs ˌjuːnɪt/, U.S. /ˈbeɪs ˌjunət/ Origin: Formed within English, by compounding. Etymons: base n.¹, unit n. and adj. Etymology: < base n.¹ + unit n. and adj. 1. A unit forming the basis of a system of measurement, combination, etc.; (Science) each of the fundamental units in a system of measurement which are defined in terms of a physical object, property, or phenomenon, rather than by the combination of other units.The base units of the SI are the metre, kilogram, second, ampere, kelvin, mole, and candela. ΘΚΠ the world > relative properties > measurement > [noun] > that by which one measures > unit of measurement measurec1384 modulea1628 standard1646 unit1681 base unit1867 1867 Q. Jrnl. Pure & Appl. Math. 8 53 I have been obliged to use as the base unit (1 + x)⁰ corresponding to (1 + x)^m, or (a + x)⁰ corresponding to (a + x)^m, in order to bring the processes within an available compass. 1871 C. Davies Metric Syst. ii. 41 The metre is too large for a base-unit. 1921 W. Krampner & W. E. Grady Arithm. by Grades 59 Units of measures that are larger than the base units are called by names with Greek prefixes. 1972 Physics Bull. Jan. 10/1 Amongst the main decisions taken by the conference were the final adoption of the ‘mole’ (mol) as an SI base unit. 1990 Appl. Linguistics 11 188 Clinical linguistics..also makes use of the utterance as a base unit. 2008 Age (Melbourne) (Nexis) 18 Feb. (Education section) 13 The base unit ‘are’ was part of the old metric system and not part of the modern SI. 2. A part, component, device, or unit which forms or acts as a base (in various senses). ΚΠ 1919 H. P. Manly Automobile Ignition vii. 244 The coil housing is attached to the base unit by means of four screws. 1929 Pop. Sci. Monthly May 92/1 Body or base unit. Turn the four legs carefully to the design indicated. 1972 U.S. Patent 3,644,681 9/2 The base unit and the portable unit each contain a radio transmitter and receiver. 1980 Washington Post (Nexis) 9 Mar. l11 The blenders consist of a base unit which houses a motor and a container with a set of small, madly whirling blades at the bottom. 1994 BBC Good Food Feb. 70/2 The sit-on sink, which rests on top of a base unit. 2004 Retro Gamer No. 10. 27/1 The current going price for IIGS machines is between $25 for a base unit, and up to $99 for a complete machine with monitor. This is a new entry (OED Third Edition, September 2011; most recently modified version published online December 2021). < n.1867
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