põhifüüsikalisi
Põhifüüsikalisi is an Estonian adjective phrase used in physics and education to refer to fundamental physical concepts or quantities. In common usage, it appears most often in phrases such as põhifüüsikalised suurused, which translates to fundamental or base physical quantities. The term is not a field of study by itself but a descriptor that helps distinguish core quantities from derived or applied measures.
In the context of physics and the International System of Units (SI), põhifüüsikalised suurused are the base
The distinction between põhifüüsikalisi/ base quantities and derived quantities is common in textbooks and curricula. Base
In Estonian usage, the form põhifüüsikalisi is typically encountered in educational materials, glossaries, and scientific writing