Share this entry

Share this page

fundamental unit

Line breaks: fun¦da|men¦tal unit

Definition of fundamental unit in English:

noun

Each of a set of unrelated units of measurement, which are arbitrarily defined and from which other units are derived. For example, in the SI system the fundamental units are the metre, kilogram, and second.
Example sentences
  • SI (Système Internationale d' Unites) uses seven different fundamental units, the meter, kilogram, second, ampere, kelvin, candela, and mole.
  • Pyroelectric detectors and other thermal detectors are the basis for all primary standards used to ensure that laser power and energy measurements are traceable to fundamental units.
  • With their sights set on objectivity, precision, and repeatability, scientists around the world were strongly motivated to standardize the fundamental units of measurement.

Definition of fundamental unit in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day cumbersome
Pronunciation: ˈkəmbərsəm
adjective
large or heavy and therefore difficult to carry…