: 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.

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

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

BASIS meaning: 1 : something (such as an idea or set of ideas) from which another thing develops or can develop usually singular; 2 : a reason for doing something

Basis is the underlying reason or assumption. The basis of a dictionary is that people are curious to learn the meanings of new words. You are interested, right?

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

Definition of basis noun in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

BASE definition: the bottom support of anything; that on which a thing stands or rests. See examples of base used in a sentence.

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

Feb 24, 2026 · Here we are 3 years later, and Basis can now complete a partnership tax workbook end to end. Basis' abilities improve monthly and the rate of improvement itself is increasing. Every day …