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fundamental unit

British  

noun

  1. one of a set of unrelated units that form the basis of a system of units. For example, the metre, kilogram, and second are fundamental units of the SI system

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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He makes the case that, while human brains are marvels of complexity, their fundamental unit, the neuron, isn’t so different from that of sea slugs.

From The Wall Street Journal ● Nov. 13, 2025

Underlying these conceptual frameworks is the recognition that the fundamental unit of the theater isn’t the performer alone but the performer in physical proximity to an audience.

From Los Angeles Times ● Aug. 13, 2020

The atom is the smallest and most fundamental unit of matter.

From Textbooks ● Sep. 6, 2018

Councils are Britain’s fundamental unit of local government, dealing with an array of basic needs: trash collection, public transport, libraries, town planning, and care for children and other vulnerable people, among other things.

From New York Times ● Aug. 17, 2018

The gene—the fundamental unit of heredity—must also be made of subunits, he reasoned, and the structure of DNA should illuminate these subunits.

From "The Gene" by Siddhartha Mukherjee

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