fundamental units
nounUK /ˌfʌndəˈmɛntl ˈjuːnɪts/
US /ˌfʌndəˈmɛntl ˈjunɪts/
The basic building-block units that other units are made from.
In physics, the metre, kilogram, and second are fundamental units.
RELATED WORDS
OTHER MEANINGS
2. The simplest units in a system of measurement that cannot be broken down further.
Scientists use fundamental units to define all other units.
3. The essential parts or elements that form the foundation of something.
Trust and respect are fundamental units of a good friendship.
4. In science, the seven base units of the International System of Units.
The mole is one of the fundamental units used in chemistry.