The basis is defined as the foundation of something, or as a concept or a necessary part of something.
(noun)See basis in Webster's New World College Dictionary
noun pl. bases
Origin: L < Gr, a base, pedestal < bainein, to go < IE base *gwem-, come
See basis in American Heritage Dictionary 4
noun pl. ba·ses (-sēzˌ)
Origin:
Origin: Middle English
Origin: , from Latin
Origin: , from Greek; see gwā- in Indo-European roots
.Learn more about basis