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

: 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 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?

a basic fact, amount, standard, etc., used in making computations, reaching conclusions, or the like: The nurse is paid on an hourly basis. He was chosen on the basis of his college grades.

Discover everything about the word "BASIS" in English: meanings, translations, synonyms, pronunciations, examples, and grammar insights - all in one comprehensive guide.

Basis definition: A foundation upon which something rests.

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 noun [C] (DEVELOPMENT) a situation, fact, or idea from which something can develop:

Nov 10, 2025 · Step-up in basis raises an asset's cost basis to the fair market value on the day the owner dies. It also exempts it from capital gains taxes until sold after death.

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