power unitn.

Brit.

/ˈpaʊə ˌjuːnɪt/, U.S.

/ˈpaʊ(ə)r ˌjunət/

Origin: Formed within English, by compounding. Etymons: power n.¹, unit n.

Etymology: < power n.¹ + unit n.

1. A unit of measurement for power. Now rare.

ΚΠ

1874 A. Fendler Mech. Universe 18 You have already..admitted some unit of power capable of being defined... You may say: I need no definite power-unit here, I can institute the comparison by the work it performs in a certain length of time.

1897 Econ. Jrnl. 7 400 Since by hypothesis No. II. has 5,300 units of productive power..the exports from No. II must be the produce of 2,000 power-units.

1924 A. J. Allmand & H. J. T. Ellingham Princ. Appl. Electrochem. (ed. 2) i. 6 Of power units we have the kilowatt (K.W.), which is 1,000 watts, and the horse-power (H.P.), which is 746 watts.

2. A device supplying power or controlling its supply; a power plant, an engine; (also) an electrical power pack.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > electricity > electrical power, electricity > place of power generation > [noun]

powerhouse1870

power plant1871

installation1882

power station1887

substation1887

power centre1892

coal plant1894

power unit1904

nuke1969

1904 Westm. Gaz. 30 Mar. 2/1 A reason for utilising the gas-engine as a large-size power unit for central engine work.

1926 Jrnl. Franklin Inst. 202 436 This speaker employs a six-inch cone driven by an electromagnetic power unit.

1963 Amer. Speech 38 120 The auxiliary power unit supplying electrical power to the KC-97 when it is on the ground.

1967 C. J. Freezer Model Railway Terminol. 8/1 The power unit is a device which converts the high-voltage mains current into low-voltage currents, often with several outputs.

1999 South China Morning Post (Hong Kong) 11 Oct. 5/7 They can be recharged by an auxiliary power unit using a low-emission, diesel-powered generator.

This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022).

单词	power unit
释义	power unitn. Brit. /ˈpaʊə ˌjuːnɪt/, U.S. /ˈpaʊ(ə)r ˌjunət/ Origin: Formed within English, by compounding. Etymons: power n.¹, unit n. Etymology: < power n.¹ + unit n. 1. A unit of measurement for power. Now rare. ΚΠ 1874 A. Fendler Mech. Universe 18 You have already..admitted some unit of power capable of being defined... You may say: I need no definite power-unit here, I can institute the comparison by the work it performs in a certain length of time. 1897 Econ. Jrnl. 7 400 Since by hypothesis No. II. has 5,300 units of productive power..the exports from No. II must be the produce of 2,000 power-units. 1924 A. J. Allmand & H. J. T. Ellingham Princ. Appl. Electrochem. (ed. 2) i. 6 Of power units we have the kilowatt (K.W.), which is 1,000 watts, and the horse-power (H.P.), which is 746 watts. 2. A device supplying power or controlling its supply; a power plant, an engine; (also) an electrical power pack. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electrical power, electricity > place of power generation > [noun] powerhouse1870 power plant1871 installation1882 power station1887 substation1887 power centre1892 coal plant1894 power unit1904 nuke1969 1904 Westm. Gaz. 30 Mar. 2/1 A reason for utilising the gas-engine as a large-size power unit for central engine work. 1926 Jrnl. Franklin Inst. 202 436 This speaker employs a six-inch cone driven by an electromagnetic power unit. 1963 Amer. Speech 38 120 The auxiliary power unit supplying electrical power to the KC-97 when it is on the ground. 1967 C. J. Freezer Model Railway Terminol. 8/1 The power unit is a device which converts the high-voltage mains current into low-voltage currents, often with several outputs. 1999 South China Morning Post (Hong Kong) 11 Oct. 5/7 They can be recharged by an auxiliary power unit using a low-emission, diesel-powered generator. This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022). < n.1874
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