: 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.

Idiom on a need-to-know basis (Definition of basis from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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?

Bases are the plural noun referring to several foundations, substances, or central points, while basis is a singular noun meaning the main supporting principle for something.

Basis Look up Basis or basis in Wiktionary, the free dictionary. Basis is a term used in mathematics, finance, science, and other contexts to refer to foundational concepts, valuation …

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

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.