|—n , pl -ses|
|1.||something that underlies, supports, or is essential to something else, esp an abstract idea|
|2.||a principle on which something depends or from which something has issued|
|3.||maths (of a vector space) a maximal set of linearly independent vectors, in terms of which all the elements of the space are uniquely expressible, and the number of which is the dimension of the space: the vectors x, y and z form a basis of the 3-dimensional space all members of which can be written as ax + by + cz|
|[C14: via Latin from Greek: step, from bainein to step, go]|
basis ba·sis (bā'sĭs)
n. pl. ba·ses (-sēz')
The foundation upon which something, such as an anatomical part, rests.