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Noun: basis (bases)  bey-sis
  1. A relation that provides the foundation for something
    "he worked on an interim basis";
    - footing, ground
  2. The fundamental assumptions from which something is begun, developed, calculated or explained
    "the whole argument rested on a basis of conjecture";
    - base, foundation, fundament, groundwork, cornerstone
  3. The most important or necessary part of something
    "the basis of this drink is orange juice";
    - base
  4. (mathematics) in a vector space, a linearly independent set of vectors spanning the whole vector space

Type of: assumption, component, component part, constituent, foundation, part, portion, supposal, supposition

Part of: explanation

Encyclopedia: Basis