: the bottom of something considered as its foundation. Fruit juice constitutes the basis of jelly. He is on a first-name basis with his customers.

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BASIS has been providing world-class, tuition-free education since 1998. Find a school near you and discover why BASIS is the perfect fit for your student! BASIS Texas Charter Schools deliver an …

BASIS meaning: 1. the most important facts, ideas, etc. from which something is developed: 2. a way or method of…. Learn more.

1. a bottom or base; the part on which something stands or rests. 2. anything upon which something is based; a fundamental principle. 3. the principal constituent; fundamental ingredient.

The basis of something is its starting point or an important part of it from which it can be further developed.

Mar 16, 2026 · (topology) A collection of subsets ("basis elements") of a set, such that this collection covers the set, and for any two basis elements which both contain an element of the set, there is a …

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There are 13 meanings listed in OED's entry for the noun basis, four of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

BASIS definition: the bottom or base of anything; the part on which something stands or rests. See examples of basis used in a sentence.