The meaning of FUNDAMENTAL is serving as a basis supporting existence or determining essential structure or function : basic.

FUNDAMENTAL definition: 1. forming the base, from which everything else develops: 2. more important than anything else…. Learn more.

Fundamental definition: serving as, or being an essential part of, a foundation or basis; basic; underlying.. See examples of FUNDAMENTAL used in a sentence.

You use fundamental to describe things, activities, and principles that are very important or essential. They affect the basic nature of other things or are the most important element upon …

Definition of fundamental adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

FUNDAMENTAL meaning: 1 : forming or relating to the most important part of something basic often + to; 2 : of or relating to the basic structure or function of something

Oct 9, 2025 · fundamental (plural fundamentals) (generic, singular) A basic truth, elementary concept, principle, rule, or law. An individual fundamental will often serve as a building block …

1. serving as, or being an essential part of, a foundation or basis; basic; underlying: fundamental principles. 2. of, pertaining to, or affecting the foundation or basis: a fundamental revision. 3. …

Fundamental has its roots in the Latin word fundamentum, which means "foundation." So if something is fundamental, it is a key point or underlying issue — the foundation, if you will — …

There are 17 meanings listed in OED's entry for the word fundamental, three of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.