base unit

American  

noun

Physics.

1. one of the units, as mass, length, time, or electric current, taken as a basis for a system of units in the sciences.

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base unit British  

noun

1. physics any of the fundamental units in a system of measurement. The base SI units are the metre, kilogram, second, ampere, kelvin, candela, and mole

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Example Sentences

Quantum sensors reach extreme levels of precision by exploiting the quantum nature of matter—using the difference between, for example, electrons in different energy states as a base unit.

From Scientific American

Fitch would go on to serve as a member of the Women’s Army Corps in Brownsville, Texas, before moving to the 2520th Army Air Force Base Unit in Frederick, Oklahoma.

From Washington Times

It attaches to the fulcrum hinge on the base unit, where the keyboard, trackpad, and discrete GPU are housed.

From The Verge

With a base unit height of 33.3 inches and a thin worktop, the island will have an optimal working height, ergonomic for you and usable by younger, ever-growing family members.

From Seattle Times

Instead of meters, feet, furlongs, or fathoms, the correct base unit of length for people who live on the earth is the radius of the earth itself.

From Scientific American