run-of-riveradj.

Brit.

/ˌrʌnəvˈrɪvə/, U.S.

/ˌrənəvˈrɪvər/

Origin: Formed within English, by compounding. Etymons: run n.², of prep., river n.¹

Etymology: < run n.² + of prep. + river n.¹

Of a water supply: taken directly from a river with no significant attempt to store water or regulate flow; (of a hydroelectric power plant) making use of such a water supply; of or relating to such a water supply or power plant.

ΘΚΠ

society > occupation and work > equipment > machine > [adjective] > type of plant

run-of-river1916

the world > matter > physics > electromagnetic radiation > electricity > electrical power, electricity > [adjective]

hydroelectric1827

run-of-river1916

1916 Jrnl. Boston Soc. Civil Engineers 3 107 From the previously mentioned intersection with the run-of-river power curve, the total capacity available from a specific number of turbines will follow a horizontal line.

1943 M. J. Steinberg & T. H. Smith Economy Loading v. 169 In a run-of-river plant, the flow of the river must be utilized as it comes, so that this plant would normally supply the system base load.

1981 Pop. Sci. Dec. 75/1 Nearly all small hydro outputs are based on ‘run-of-river’ water availabilities.

2005 Guardian 25 Feb. i. 3/2 Harnessing run-of-river hydro-electricity as opposed to damming up a river.

This entry has been updated (OED Third Edition, March 2011; most recently modified version published online March 2022).

单词	run-of-river
释义	run-of-riveradj. Brit. /ˌrʌnəvˈrɪvə/, U.S. /ˌrənəvˈrɪvər/ Origin: Formed within English, by compounding. Etymons: run n.², of prep., river n.¹ Etymology: < run n.² + of prep. + river n.¹ Of a water supply: taken directly from a river with no significant attempt to store water or regulate flow; (of a hydroelectric power plant) making use of such a water supply; of or relating to such a water supply or power plant. ΘΚΠ society > occupation and work > equipment > machine > [adjective] > type of plant run-of-river1916 the world > matter > physics > electromagnetic radiation > electricity > electrical power, electricity > [adjective] hydroelectric1827 run-of-river1916 1916 Jrnl. Boston Soc. Civil Engineers 3 107 From the previously mentioned intersection with the run-of-river power curve, the total capacity available from a specific number of turbines will follow a horizontal line. 1943 M. J. Steinberg & T. H. Smith Economy Loading v. 169 In a run-of-river plant, the flow of the river must be utilized as it comes, so that this plant would normally supply the system base load. 1981 Pop. Sci. Dec. 75/1 Nearly all small hydro outputs are based on ‘run-of-river’ water availabilities. 2005 Guardian 25 Feb. i. 3/2 Harnessing run-of-river hydro-electricity as opposed to damming up a river. This entry has been updated (OED Third Edition, March 2011; most recently modified version published online March 2022). < adj.1916
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