fundamental law

American  

noun

1. the organic law of a state, especially its constitution.

---

fundamental law British  

noun

1. the law determining the constitution of the government of a state; organic law

---

Etymology

Origin of fundamental law

First recorded in 1910–15

Example Sentences

The fundamental law of motion of cybernetics is that if you have a control system, it has to have at least as much complexity as the thing it's trying to control.

From Salon

In fact, they would have contained the maximum amount of any type of charge allowed for a black hole, according to the fundamental laws of physics.

From Science Daily

A similar attempt to change the fundamental law failed in 2019 because turnout was below a required 50% of registered voters to be valid.

From Seattle Times

“A constitution is in fact a fundamental law or basis of government, and falls strictly within the definition of law as given by Mr. Justice Blackstone,” Story writes.

From Salon

All that changed in the 1850s, when scientists uncovered a fundamental law of physics with terrifying implications.

From Salon