SI unit

British  

noun

1. any of the units adopted for international use under the Système International d'Unités, now employed for all scientific and most technical purposes. There are seven fundamental units: the metre, kilogram, second, ampere, kelvin, candela, and mole; and two supplementary units: the radian and the steradian. All other units are derived by multiplication or division of these units without the use of numerical factors

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SI unit Scientific  

1. Any of the units of measure in the International System.

2. See more at International System

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Example Sentences

The SI unit of heat, work, and energy is the joule.

From Textbooks • Feb. 14, 2019

In the International System, the SI unit of speed is the metre per second.

From New York Times • Sep. 22, 2016

The SI unit of torque is newtons times meters, usually written as N · m .

From Textbooks • Aug. 12, 2015

The kelvin is the SI unit used in scientific work.

From Textbooks • Aug. 12, 2015

The SI unit for time is the second, abbreviated s.

From Textbooks • Aug. 12, 2015